BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//CERN//INDICO//EN
BEGIN:VEVENT
SUMMARY:Valery Rubakov and Contemporary status of cosmology
DTSTART;VALUE=DATE-TIME:20221122T060000Z
DTEND;VALUE=DATE-TIME:20221122T064500Z
DTSTAMP;VALUE=DATE-TIME:20240720T002101Z
UID:indico-contribution-674-504@indico.ihep.su
DESCRIPTION:Speakers: Dmitry Gorbunov (INR RAS (Moscow))\nhttps://indico.i
hep.su/event/674/contributions/504/
LOCATION:
URL:https://indico.ihep.su/event/674/contributions/504/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Search for light dark matter. NA64 experiment
DTSTART;VALUE=DATE-TIME:20221122T123000Z
DTEND;VALUE=DATE-TIME:20221122T131000Z
DTSTAMP;VALUE=DATE-TIME:20240720T002101Z
UID:indico-contribution-674-516@indico.ihep.su
DESCRIPTION:Speakers: Nikolay Krasnikov (INR\, Moscow)\nhttps://indico.ih
ep.su/event/674/contributions/516/
LOCATION:
URL:https://indico.ihep.su/event/674/contributions/516/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Discussion 2 (discussion leader Yu.M. Zinoviev)
DTSTART;VALUE=DATE-TIME:20221122T135000Z
DTEND;VALUE=DATE-TIME:20221122T142000Z
DTSTAMP;VALUE=DATE-TIME:20240720T002101Z
UID:indico-contribution-674-517@indico.ihep.su
DESCRIPTION:https://indico.ihep.su/event/674/contributions/517/
LOCATION:
URL:https://indico.ihep.su/event/674/contributions/517/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Screw calculus: from machinery to twistors
DTSTART;VALUE=DATE-TIME:20221124T082000Z
DTEND;VALUE=DATE-TIME:20221124T085500Z
DTSTAMP;VALUE=DATE-TIME:20240720T002101Z
UID:indico-contribution-674-493@indico.ihep.su
DESCRIPTION:Speakers: Roman Rogalyov (IHEP\, Protvino)\nWrenches and twist
s are considered as generalizations of the concepts of force and angular v
elocity\, respectively\, and the corresponding mathematical formalism is r
eviewed. Manifolds of forces or angular velocities that naturally emerge i
n the screw theory are compared with the Grassmann manifold associated wit
h the Penrose twistor space.\n\nhttps://indico.ihep.su/event/674/contribut
ions/493/
LOCATION:
URL:https://indico.ihep.su/event/674/contributions/493/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Ether is alive! New derivation of the cosmological constant
DTSTART;VALUE=DATE-TIME:20221124T145500Z
DTEND;VALUE=DATE-TIME:20221124T153500Z
DTSTAMP;VALUE=DATE-TIME:20240720T002101Z
UID:indico-contribution-674-495@indico.ihep.su
DESCRIPTION:Speakers: Xiao Song Wang ()\nGeneral theory of relativity (GR)
can be regarded as a phenomenological theory because there are no mediums
in GR. Einstein's equations is a basic assumption in GR. Many attempts to
reconcile the theory of general relativity and quantum mechanics by using
the techniques in quantum electrodynamics failed. Therefore\, it seems th
at new considerations on the ether theories of gravitation is needed. Sinc
e Newton's law of gravitation was published in 1687\, this action-at-a-dis
tance theory was criticized by the French Cartesian. Sir I. Newton pointed
out that his inverse-square law of gravitation did not touch on the mecha
nism of gravitation. He tried to obtain a derivation of his law based on D
escartes' scientific research program. At last\, he proved that Descartes'
vortex ether hypothesis could not explain celestial motions properly. New
ton himself even suggested an explanation of gravity based on the action o
f an etherial medium pervading the space. In the years 1905-1916\, Einstei
n abandoned the concepts of ether. However\, H. A. Lorentz believed that G
R could be reconciled with the concept of an ether at rest and wrote a let
ter to A. Einstein. Einstein changed his view later and introduced his new
concept of ether. In order to compare fluid motions with electric fields\
, J. C. Maxwell introduced an analogy between source or sink flows and ele
ctric charges. B. Riemann speculates that that space is filled with a subs
tance which continually flows into ponderable atoms\, and vanishes there f
rom the world of phenomena\, the corporeal world. H. Poincar$\\acute{e}$ a
lso suggests that matters may be holes in fluidic ether. A. Einstein and L
. Infeld think that what impresses our senses as matter is really a great
concentration of energy into a comparatively small space. They regard matt
er as the regions in space where the field is extremely strong. We suppose
that the universe may be filled with a kind of fluid which may be called
the $\\Omega(0)$ substratum\, or we say the gravitational ether. Particles
are modeled as sink flows in the $\\Omega(0)$ substratum. Thus\, Newton's
inverse-square law of gravitation is derived by methods of hydrodynamics
based on a sink flow model of particles. Generalized Einstein's equations
in Fock coordinate systems are derived. If the field is weak and the refer
ence frame is quasi-inertial\, these generalized Einstein's equations redu
ce to Einstein's equations. For convenience\, we may call these theories a
s the theory of vacuum mechanics (VM). The Einstein's equations are rigoro
us in GR. In VM\, however\, they are only valid approximately under three
conditions. Another feature of VM is that the gravitational constant and m
asses of particles are variable with time and position in space. In 1990-1
999 two groups discovered the cosmic vacuum\, or dark energy\, by studying
remote supernova explosions. They discovered that some high redshift supe
rnovae appeared fainter and thus more distant than they should be in a gra
vitationally decelerating universe. This discovery gives the first indicat
ion that the universe is accelerating. A possible explanation is that vacu
um may contain some kind of ethers which behave like Einstein's antigravi
ty cosmological constant. Lord Kelvin believed that the electromagnetic et
her must also generate gravity. Presently\, we have no methods to determin
e the density of the electromagnetic ether\, or we say the $\\Omega(1)$ su
bstratum. Thus\, we also suppose that vacuum is filled with another kind o
f continuously distributed substance\, which may be called the $\\Omega(2)
$ substratum. Thus\, the cosmological constant is calculated theoretically
. The predicted cosmological constant $\\Lambda_{\\mathrm{the}} = 1.093(65
)\\times 10^{-52}\\mathrm{m}^{-2}$ is consistent with the observational va
lue of the cosmological constant $\\Lambda_{\\mathrm{obs}}=1.088(30)\\time
s 10^{-52}\\mathrm{m}^{-2}$. The $\\Omega(1)$ and $\\Omega(2)$ substrata m
ay be a possible candidate of the dark energy. According to VM\, only thos
e energy-momentum tensors of sinks in the $\\Omega(0)$ substratum are perm
itted to act as the source terms in the generalized Einstein's equations.
Thus\, the zero-point energy of electromagnetic fields is not qualified fo
r a source term in the generalized Einstein's equations.\n\nhttps://indico
.ihep.su/event/674/contributions/495/
LOCATION:
URL:https://indico.ihep.su/event/674/contributions/495/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Unimodular gravity
DTSTART;VALUE=DATE-TIME:20221122T142000Z
DTEND;VALUE=DATE-TIME:20221122T150000Z
DTSTAMP;VALUE=DATE-TIME:20240720T002101Z
UID:indico-contribution-674-518@indico.ihep.su
DESCRIPTION:Speakers: Enrique Alvarez (ift-UAM/CSIC)\nhttps://indico.ihep
.su/event/674/contributions/518/
LOCATION:
URL:https://indico.ihep.su/event/674/contributions/518/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Massive gravity theories and Higgs mechanism for gravity
DTSTART;VALUE=DATE-TIME:20221122T150000Z
DTEND;VALUE=DATE-TIME:20221122T154000Z
DTSTAMP;VALUE=DATE-TIME:20240720T002101Z
UID:indico-contribution-674-519@indico.ihep.su
DESCRIPTION:Speakers: mikhail volkov ()\nhttps://indico.ihep.su/event/674/
contributions/519/
LOCATION:
URL:https://indico.ihep.su/event/674/contributions/519/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Closing Address
DTSTART;VALUE=DATE-TIME:20221124T163500Z
DTEND;VALUE=DATE-TIME:20221124T164500Z
DTSTAMP;VALUE=DATE-TIME:20240720T002101Z
UID:indico-contribution-674-534@indico.ihep.su
DESCRIPTION:https://indico.ihep.su/event/674/contributions/534/
LOCATION:
URL:https://indico.ihep.su/event/674/contributions/534/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Discussion 7 (discussion leader V.A. Petrov)
DTSTART;VALUE=DATE-TIME:20221124T153500Z
DTEND;VALUE=DATE-TIME:20221124T163500Z
DTSTAMP;VALUE=DATE-TIME:20240720T002101Z
UID:indico-contribution-674-533@indico.ihep.su
DESCRIPTION:https://indico.ihep.su/event/674/contributions/533/
LOCATION:
URL:https://indico.ihep.su/event/674/contributions/533/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Bigravity
DTSTART;VALUE=DATE-TIME:20221122T162000Z
DTEND;VALUE=DATE-TIME:20221122T170000Z
DTSTAMP;VALUE=DATE-TIME:20240720T002101Z
UID:indico-contribution-674-520@indico.ihep.su
DESCRIPTION:Speakers: Vladimir Soloviev (IHEP\, Protvino)\nhttps://indico.
ihep.su/event/674/contributions/520/
LOCATION:
URL:https://indico.ihep.su/event/674/contributions/520/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Chiral effects in QCD and other theories
DTSTART;VALUE=DATE-TIME:20221123T144500Z
DTEND;VALUE=DATE-TIME:20221123T153000Z
DTSTAMP;VALUE=DATE-TIME:20240720T002101Z
UID:indico-contribution-674-512@indico.ihep.su
DESCRIPTION:Speakers: Zakhar Khaidukov (NRC Kurchatov Institute\, Moscow)\
nWe report on some non-trivial results in the domain of chiral transport\,
that have been recently obtained\, and that seems to us today to be signi
ficant. We pay considerable attention to the relationship between chiral
effects and corresponding anomalies. We show non-universality of this de
pendence using examples of chiral separation and chiral vortical effects.
\n\nhttps://indico.ihep.su/event/674/contributions/512/
LOCATION:
URL:https://indico.ihep.su/event/674/contributions/512/
END:VEVENT
BEGIN:VEVENT
SUMMARY:RG Equations in Non-renormalizable Theories
DTSTART;VALUE=DATE-TIME:20221124T064000Z
DTEND;VALUE=DATE-TIME:20221124T072000Z
DTSTAMP;VALUE=DATE-TIME:20240720T002101Z
UID:indico-contribution-674-499@indico.ihep.su
DESCRIPTION:Speakers: Dmitry Kazakov (JINR)\nWe construct the RG equations
for the scattering amplitudes and effective potential\nIn a a set of non-
renormalizable theories. We show that they are a consequence of locality\n
rather than multiplicative renormalizability. These RG equations sum up t
he leading log terms\n in all orders of PT and allow one to explore the hi
gh energy/field behaviour.\n\nhttps://indico.ihep.su/event/674/contributio
ns/499/
LOCATION:
URL:https://indico.ihep.su/event/674/contributions/499/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Relativity Theory: Genesis and Completion
DTSTART;VALUE=DATE-TIME:20221124T132500Z
DTEND;VALUE=DATE-TIME:20221124T135500Z
DTSTAMP;VALUE=DATE-TIME:20240720T002101Z
UID:indico-contribution-674-538@indico.ihep.su
DESCRIPTION:Speakers: Vladimir Petrov (IHEP\, Protvino)\nThis a concise su
rvey of both the first pioneering ideas in the beginning of formation of t
he Relativity Theory (2nd half of the XIXth century) and its conceptual an
d essential completion in 1910s .\n\nhttps://indico.ihep.su/event/674/cont
ributions/538/
LOCATION:
URL:https://indico.ihep.su/event/674/contributions/538/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Higgs-scalaron inflation
DTSTART;VALUE=DATE-TIME:20221122T113000Z
DTEND;VALUE=DATE-TIME:20221122T121000Z
DTSTAMP;VALUE=DATE-TIME:20240720T002101Z
UID:indico-contribution-674-515@indico.ihep.su
DESCRIPTION:Speakers: Dmitry Gorbunov (Institute for Nuclear Research of t
he Russian Academy of Sciences)\nhttps://indico.ihep.su/event/674/contribu
tions/515/
LOCATION:
URL:https://indico.ihep.su/event/674/contributions/515/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Gravitational wave astronomy and its implications for cosmology
DTSTART;VALUE=DATE-TIME:20221122T075000Z
DTEND;VALUE=DATE-TIME:20221122T083500Z
DTSTAMP;VALUE=DATE-TIME:20240720T002101Z
UID:indico-contribution-674-506@indico.ihep.su
DESCRIPTION:Speakers: Konstantin Postnov (SAI MSU & Kazan Fed. U.\, Russia
)\nhttps://indico.ihep.su/event/674/contributions/506/
LOCATION:
URL:https://indico.ihep.su/event/674/contributions/506/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Holography approach to QCD
DTSTART;VALUE=DATE-TIME:20221123T064500Z
DTEND;VALUE=DATE-TIME:20221123T073000Z
DTSTAMP;VALUE=DATE-TIME:20240720T002101Z
UID:indico-contribution-674-511@indico.ihep.su
DESCRIPTION:Speakers: Irina Aref'eva (Steklov Mathematical Institute\, Rus
sian Academy of Sciences\, Moscow)\nMagnetic properties of quark-gluon pla
sma within holographic approach are discussed. Particular attention is pai
d to the different behavior of holographic models for heavy and light quar
ks.\n\nhttps://indico.ihep.su/event/674/contributions/511/
LOCATION:
URL:https://indico.ihep.su/event/674/contributions/511/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Four-Quark Nature of Light Scalar Mesons
DTSTART;VALUE=DATE-TIME:20221123T113000Z
DTEND;VALUE=DATE-TIME:20221123T121500Z
DTSTAMP;VALUE=DATE-TIME:20240720T002101Z
UID:indico-contribution-674-502@indico.ihep.su
DESCRIPTION:Speakers: Nikolay Achasov (S.L. Sobolev Institute for Mathemat
ics\, 630090 Novosibirsk\, Russia)\nIt is shown that all predictions for t
he light scalars\, based on their four-quark nature\, are supported by exp
eriment. The future research program is outlined also.\n\nhttps://indico.i
hep.su/event/674/contributions/502/
LOCATION:
URL:https://indico.ihep.su/event/674/contributions/502/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Discussion 3 (discussion leader A.F. Zakharov) )
DTSTART;VALUE=DATE-TIME:20221122T170000Z
DTEND;VALUE=DATE-TIME:20221122T173000Z
DTSTAMP;VALUE=DATE-TIME:20240720T002101Z
UID:indico-contribution-674-521@indico.ihep.su
DESCRIPTION:https://indico.ihep.su/event/674/contributions/521/
LOCATION:
URL:https://indico.ihep.su/event/674/contributions/521/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Heavy-ion physics at LHC
DTSTART;VALUE=DATE-TIME:20221123T083000Z
DTEND;VALUE=DATE-TIME:20221123T091500Z
DTSTAMP;VALUE=DATE-TIME:20240720T002101Z
UID:indico-contribution-674-489@indico.ihep.su
DESCRIPTION:Speakers: Yuri Kharlov (IHEP)\nOverview of recent experimental
QCD measurements at LHC will be presented.\n\nhttps://indico.ihep.su/even
t/674/contributions/489/
LOCATION:
URL:https://indico.ihep.su/event/674/contributions/489/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Fractional Analytic QCD for space-like and time-like processes
DTSTART;VALUE=DATE-TIME:20221123T140000Z
DTEND;VALUE=DATE-TIME:20221123T144500Z
DTSTAMP;VALUE=DATE-TIME:20240720T002101Z
UID:indico-contribution-674-503@indico.ihep.su
DESCRIPTION:Speakers: Anatoli Kotikov (JINR)\nA review of the main element
s of (fractional) analytical QCD is\npresented. The main part of the revie
w is focused on the introduction of the Shirkov-Solovtsov and Bakulev-Mikh
ailov-Stefanis approaches and their recent extension beyond the leading or
der of perturbation theory. We present various representations in Euclidea
n and Minkowski spaces\,\ndetails of their construction and show their app
licability.\n\nhttps://indico.ihep.su/event/674/contributions/503/
LOCATION:
URL:https://indico.ihep.su/event/674/contributions/503/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Discussion 6 (discussion leader O.V. Teryaev)
DTSTART;VALUE=DATE-TIME:20221124T100500Z
DTEND;VALUE=DATE-TIME:20221124T110500Z
DTSTAMP;VALUE=DATE-TIME:20240720T002101Z
UID:indico-contribution-674-530@indico.ihep.su
DESCRIPTION:https://indico.ihep.su/event/674/contributions/530/
LOCATION:
URL:https://indico.ihep.su/event/674/contributions/530/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Discussion 4 (discussion leader - A. Nakamura)
DTSTART;VALUE=DATE-TIME:20221123T091500Z
DTEND;VALUE=DATE-TIME:20221123T101500Z
DTSTAMP;VALUE=DATE-TIME:20240720T002101Z
UID:indico-contribution-674-524@indico.ihep.su
DESCRIPTION:https://indico.ihep.su/event/674/contributions/524/
LOCATION:
URL:https://indico.ihep.su/event/674/contributions/524/
END:VEVENT
BEGIN:VEVENT
SUMMARY:New searches in the ATLAS experiment
DTSTART;VALUE=DATE-TIME:20221123T121500Z
DTEND;VALUE=DATE-TIME:20221123T130000Z
DTSTAMP;VALUE=DATE-TIME:20240720T002101Z
UID:indico-contribution-674-525@indico.ihep.su
DESCRIPTION:Speakers: Alexey Myagkov (IHEP\, Protvino)\nhttps://indico.ih
ep.su/event/674/contributions/525/
LOCATION:
URL:https://indico.ihep.su/event/674/contributions/525/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Evolution of a Quantum System: New Results.
DTSTART;VALUE=DATE-TIME:20221124T093000Z
DTEND;VALUE=DATE-TIME:20221124T100500Z
DTSTAMP;VALUE=DATE-TIME:20240720T002101Z
UID:indico-contribution-674-508@indico.ihep.su
DESCRIPTION:Speakers: Biryukov Alexandr (Samara State University of Railwa
y Transport.)\nA description of the evolution of a quantum system is consi
dered. Within the framework of the path integration method\, the probabili
ty of a system transition between quantum states is determined as a double
functional integral of a real functional. Its interpretation from the poi
nt of view of probability theory is given. The transition probability is t
he sum of the probabilities of pairwise joint random events (virtual traje
ctories between states). A model of quantum processes in the extended spac
e of random joint events is proposed. Within the framework of the proposed
model\, the probability of a system transition is represented by a series
of twofold\, threefold\, etc. integrals of real functionals of joint even
t trajectories. The expression coincides with the transition probability i
n quantum theory if only pairwise joint random trajectories are taken into
account in the model.\n\nhttps://indico.ihep.su/event/674/contributions/5
08/
LOCATION:
URL:https://indico.ihep.su/event/674/contributions/508/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Dense quark matter: effective model approach
DTSTART;VALUE=DATE-TIME:20221123T060000Z
DTEND;VALUE=DATE-TIME:20221123T064500Z
DTSTAMP;VALUE=DATE-TIME:20240720T002101Z
UID:indico-contribution-674-535@indico.ihep.su
DESCRIPTION:Speakers: Tamaz Khunjua ()\nDense quark matter has been under
debate for more than 40 years. This kind of matter appears in heavy-ion c
ollision experiments and could exist in some types of compact stars. Its f
undamental theory is quantum chromodynamics (QCD). But as a consequence of
the asymptotic freedom\, the perturbative technique is not applicable to
investigate the condensed quarks (long-range phenomenon).\n There are tw
o approaches to investigating dense quark matter. QCD on the lattice and e
ffective field theories (EFT). The first one is a potent numerical tool fr
om the first principles. But due to the sign problem\, it can’t describe
the region of the QCD phase diagram with non-zero density and low tempera
ture. So to achieve this region\, EFT is the most common tool. \n Alth
ough the EFT method has been developed for several decades\, it is still c
ommonly applied and developing.\n We will review the milestones of EFT a
s a tool for investigating dense quark matter\, especially the Nambu–Jon
a-Lasinio model and its applications.\n\nhttps://indico.ihep.su/event/674/
contributions/535/
LOCATION:
URL:https://indico.ihep.su/event/674/contributions/535/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Representation of the RG-invariant quantities in perturbative QCD
through powers of the conformal anomaly
DTSTART;VALUE=DATE-TIME:20221123T131500Z
DTEND;VALUE=DATE-TIME:20221123T140000Z
DTSTAMP;VALUE=DATE-TIME:20240720T002101Z
UID:indico-contribution-674-536@indico.ihep.su
DESCRIPTION:Speakers: Andrey Kataev (INR\, Moscow)\nWe consider the possib
ility of representing the perturbative series for renormalization group in
variant quantities in QCD in the form of their decomposition in powers of
the conformal anomaly $\\beta(\\alpha_s)/\\alpha_s$ in the \\msbar-scheme
. We remind that such expansion is possible for the Adler function of the
process of $e^+e^-$ annihilation into hadrons and the Bjorken polarized s
um rule for the deep-inelastic electron-nucleon scattering\, which are bot
h related by the Crewther-Broadhurst-Kataev relation. In addition\, we stu
dy the cases of the static quark-antiquark Coulomb-like potential\, its re
lation with the quantity defined by the cusp anomalous dimension and the B
jorken unpolarized sum rule of neutrino-nucleon scattering. The arguments
in favor of the validity of the considered representation are given.\n\nh
ttps://indico.ihep.su/event/674/contributions/536/
LOCATION:
URL:https://indico.ihep.su/event/674/contributions/536/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Discussion 5 (discussion leader O.V. Teryaev)
DTSTART;VALUE=DATE-TIME:20221123T153000Z
DTEND;VALUE=DATE-TIME:20221123T163000Z
DTSTAMP;VALUE=DATE-TIME:20240720T002101Z
UID:indico-contribution-674-527@indico.ihep.su
DESCRIPTION:https://indico.ihep.su/event/674/contributions/527/
LOCATION:
URL:https://indico.ihep.su/event/674/contributions/527/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Opening address
DTSTART;VALUE=DATE-TIME:20221122T055500Z
DTEND;VALUE=DATE-TIME:20221122T060000Z
DTSTAMP;VALUE=DATE-TIME:20240720T002101Z
UID:indico-contribution-674-541@indico.ihep.su
DESCRIPTION:https://indico.ihep.su/event/674/contributions/541/
LOCATION:
URL:https://indico.ihep.su/event/674/contributions/541/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Chiral effects: an update
DTSTART;VALUE=DATE-TIME:20221124T060000Z
DTEND;VALUE=DATE-TIME:20221124T064000Z
DTSTAMP;VALUE=DATE-TIME:20240720T002101Z
UID:indico-contribution-674-528@indico.ihep.su
DESCRIPTION:Speakers: Valentin Zakharov (Institute o Theoretical and Exper
imental Physics)\nhttps://indico.ihep.su/event/674/contributions/528/
LOCATION:
URL:https://indico.ihep.su/event/674/contributions/528/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Interpretation of galaxy rotational curves
DTSTART;VALUE=DATE-TIME:20221122T131000Z
DTEND;VALUE=DATE-TIME:20221122T135000Z
DTSTAMP;VALUE=DATE-TIME:20240720T002101Z
UID:indico-contribution-674-496@indico.ihep.su
DESCRIPTION:Speakers: Federico Lelli (INAF - Arcetri Astrophysical Observa
tory)\nAfter more than 40 years of observational\, experimental\, and theo
retical efforts\, the nature of dark matter (DM) remains unknown. In this
talk I will review the observational status of the DM paradigm on galaxy s
cales. Remarkably\, the rotation curves of disk galaxies reveal a close li
nk between baryons' distribution and observed dynamics\, which can be expr
essed by a set of empirical laws akin to Kepler's laws for planetary syste
ms. A tight baryon-DM coupling is unexpected in the standard LCDM paradigm
. To reproduce such coupling\, either the galaxy formation process must be
very fine-tuned or the DM particle must somehow interact with baryons bey
ond standard gravity. Intriguingly\, the empirical laws of galactic rotati
on were predicted a-priori by Milgrom's Modified Newtonian Dynamics (MOND)
\, which alters Newton's laws at low accelerations (weak gravitational fie
lds) rather than adding particle DM. One possible way to distinguish betwe
en particle DM and MOND is the so-called external field effect\, which res
ults from the breakdown of the Strong Equivalence Principle in the MOND re
gime. I will describe recent efforts to test the MOND external field effec
t and discuss other possible tests to distinguish between the two paradigm
s.\n\nhttps://indico.ihep.su/event/674/contributions/496/
LOCATION:
URL:https://indico.ihep.su/event/674/contributions/496/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Heisenberg's Uncertainty Principle and Particle Trajectories
DTSTART;VALUE=DATE-TIME:20221124T141500Z
DTEND;VALUE=DATE-TIME:20221124T145500Z
DTSTAMP;VALUE=DATE-TIME:20240720T002101Z
UID:indico-contribution-674-532@indico.ihep.su
DESCRIPTION:Speakers: S. Aristarkhov (Berlin)\nIn this talk I will criti
cally analyse W. Heisenberg's arguments\nagainst the ontology of point par
ticles following trajectories in\nquantum theory\, presented in his famous
1927 paper and in his Chicago lectures (1929). Along the way\, we will cl
arify the meaning of Heisenberg's uncertainty relation and help resolve so
me confusions related to it.\n\nhttps://indico.ihep.su/event/674/contribut
ions/532/
LOCATION:
URL:https://indico.ihep.su/event/674/contributions/532/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Life of the homogeneous and isotropic universe in dynamical string
tension theories
DTSTART;VALUE=DATE-TIME:20221122T154000Z
DTEND;VALUE=DATE-TIME:20221122T162000Z
DTSTAMP;VALUE=DATE-TIME:20240720T002101Z
UID:indico-contribution-674-492@indico.ihep.su
DESCRIPTION:Speakers: Eduardo Guendelman (Ben-Gurion University of the Neg
ev\, Beer-Sheva\, Israel)\nCosmological solutions are studied in the conte
xt of the modified\n measure formulation of string theory \, then the stri
ng tension is a \n dynamical variable and the string the tension is an add
itional dynamical\n degree of freedom and its value is dynamically generat
ed. These tensions\n are then not universal\, rather each string generates
its own tension\n which can have a different value for each of the string
world sheets and\n in an ensemble of strings. The values of the tensions
can have a certain\n dispersion in the ensemble. We consider a new backgro
und field that can\n couple to these strings\, the “tension scalar” wh
ich is capable of\n changing locally along the world sheet and then the va
lue of the tension\n of the string changes accordingly. When many types of
strings probing\n the same region of space are considered this tension sc
alar is\n constrained by the requirement of quantum conformal invariance.
For the\n case of two types of strings probing the same region of space wi
th\n different dynamically generated tensions\, there are two different\n
metrics\, associated to the different strings. Each of these metrics have\
n to satisfy vacuum Einstein’s equations and the consistency of these tw
o\n Einstein’s equations determine the tension scalar. The universal met
ric\,\n common to both strings generically does not satisfy Einstein’s e
quation\n . The two string dependent metrics considered here are flat spac
e in\n Minkowski space and Minkowski space after a special conformal\n tra
nsformation. The limit where the two string tensions are the same is\n stu
died\, it leads to a well defined solution. If the string tension\n differ
ence between the two types of strings is very small but finite\,\n the app
roximately homogeneous and isotropic cosmological solution lasts\n for a l
ong time\, inversely proportional to the string tension difference\n and t
hen the homogeneity and and isotropy of the cosmological disappears\n and
the solution turns into an expanding braneworld where the strings\n are co
nfined between two expanding bubbles separated by a very small\n distance
at large times. The same principle is applied to the static end\n of the u
niverse wall solution that lasts a time inversely proportional\n to the di
spersion of string tensions. This suggest a scenario where\n quantum fluct
uations of the cosmological or static solutions induce the\n evolution tow
ards braneworld scenarios and decoherence between the\n different string t
ension states.\n\nhttps://indico.ihep.su/event/674/contributions/492/
LOCATION:
URL:https://indico.ihep.su/event/674/contributions/492/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Covariant dynamics on the momentum space
DTSTART;VALUE=DATE-TIME:20221124T124500Z
DTEND;VALUE=DATE-TIME:20221124T132500Z
DTSTAMP;VALUE=DATE-TIME:20240720T002101Z
UID:indico-contribution-674-498@indico.ihep.su
DESCRIPTION:Speakers: boris ivetic ()\nA geometrical interpretation of Sch
rödinger's kinetic and potential energy operators is proposed\, allowing
for a covariant momentum space formulation of the dynamics that is relevan
t for the theories with the generalization of the geometry of the momentum
space. Some specific examples are discussed in the context of Euclidean
Snyder (spherical momentum space) model. In this formulation the dynamics
for different versions of the Snyder model turn out to be dynamically equ
ivalent. \nFurthermore\, a scalar field theory is constructed on an energy
-momentum background of constant curvature. The generalization of the usua
l Feynamn rules for the flat geometry follows from the requirement of thei
r covariance. The main result is that the invariant amplitudes are finite
at all orders of the perturbation theory\, due to the finitness of the mom
entum space. Finally\, the relation with a field theory in spacetime repre
sentation is briefly discussed.\n\nhttps://indico.ihep.su/event/674/contri
butions/498/
LOCATION:
URL:https://indico.ihep.su/event/674/contributions/498/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Phases of Strong Interactions: the lattice approach
DTSTART;VALUE=DATE-TIME:20221123T074500Z
DTEND;VALUE=DATE-TIME:20221123T083000Z
DTSTAMP;VALUE=DATE-TIME:20240720T002101Z
UID:indico-contribution-674-542@indico.ihep.su
DESCRIPTION:Speakers: Maria Paola Lombardo ()\nQuantum Chromodynamics has
a rich phase structure which can be explored \nby formulating the theory i
n a discrete space-time -- the lattice. We will give a general overview of
the phase structure in the space spanned by the number of flavours\, quar
k masses\, temperature and chemical potentials of conserved charges. We wi
ll focus on the physical case: in particular we will discuss the region e
xplored by ultra relativistic heavy ion\; and the higher temperatures\, up
to the freeze-out of the hypothesised QCD axion. We will examine critic
ally the limitations of the lattice approach\, and discuss current strateg
ies to overcome them. Finally\, we will briefly elaborate on QCD-like theo
ries as a possible paradigm for Beyond Standard Model physics.\n\nhttps://
indico.ihep.su/event/674/contributions/542/
LOCATION:
URL:https://indico.ihep.su/event/674/contributions/542/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Trajectories of bright stars and shadows near supermassive black h
oles as tests of gravity theories
DTSTART;VALUE=DATE-TIME:20221122T083500Z
DTEND;VALUE=DATE-TIME:20221122T092000Z
DTSTAMP;VALUE=DATE-TIME:20240720T002101Z
UID:indico-contribution-674-491@indico.ihep.su
DESCRIPTION:Speakers: Alexander Zakharov (ITEP\, Moscow)\nObservations of
bright near the Galactic Center give an opportunity to test GR predictions
but also to constrain alternative gravity parameters\, in particular\, to
limit graviton mass for the case of massive gravity theories. \nDue to a
n expected progress of observational facilities Zakharov et al. (2005a) pr
oposed to use global and ground – space VLBI observations in mm band to
detect a shadow at Sgr A$^*$ to use it as a tool to evaluate a black hole
spin and a position angle of distant observer. In particular\, it was pre
dicted that the shadow diameter is around 52 μas for the Sgr A$^*$ case
and this prediction was remarkably confirmed by the Event Horizon Telescop
e (EHT) Collaboration on 12 May 2022. Also Zakharov et al. (2005b) showed
that a black hole charge may be evaluated from shadow observations. Zakha
rov (2014) generalized these relations for the tidal charge case. In 2019
the EHT Collaboration reconstructed shadows at M87$^*$ in 2019 and at Sgr
A$^*$ in 2022. As it was shown by Zakharov (2022) black hole charge may be
found analytically from these observations.\n\nReferences\n\nZakharov A.
F. et al.\, New Astronomy 10\, 479 (2005a)\nZakharov A. F. et al.\, A & A
442\, 795 (2005b)\nZakharov A. F. \, PRD 90\, 062007 (2014)\nZakha
rov A. F. \, Universe 8\, 141 (2022)\n\nhttps://indico.ihep.su/event/
674/contributions/491/
LOCATION:
URL:https://indico.ihep.su/event/674/contributions/491/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Mass–energy connection without special relativity
DTSTART;VALUE=DATE-TIME:20221124T120500Z
DTEND;VALUE=DATE-TIME:20221124T124500Z
DTSTAMP;VALUE=DATE-TIME:20240720T002101Z
UID:indico-contribution-674-509@indico.ihep.su
DESCRIPTION:Speakers: Germano D'Abramo (Ministero dell’Istruzione\, dell
’Università e della Ricerca)\nIn 1905\, Einstein gave his first derivat
ion of the mass-energy equivalence by studying\, in different reference fr
ames\, the energy balance of a body emitting electromagnetic radiation and
assuming special relativity as a prerequisite. In this presentation\, I r
eassess the logical soundness of Einstein's approach and the validity of o
ne assumption crucial for the derivation (that has nothing to do with spec
ial relativity). If we accept that assumption as valid\, the essence (but
not the formula) of the mass-energy equivalence can be derived without the
need for special relativity or any full-fledged physical theory. However\
, the assumption is unsupported from a physical viewpoint\, and its use ma
kes Einstein's 1905 derivation circular. I also show why the widely receiv
ed interpretation of E=mc^2 (i.e.\, every kind of energy has a mass and vi
ce versa) is problematic.\n\nhttps://indico.ihep.su/event/674/contribution
s/509/
LOCATION:
URL:https://indico.ihep.su/event/674/contributions/509/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Discussion 1 (discussion leader D.S. Gorbunov)
DTSTART;VALUE=DATE-TIME:20221122T092000Z
DTEND;VALUE=DATE-TIME:20221122T095000Z
DTSTAMP;VALUE=DATE-TIME:20240720T002101Z
UID:indico-contribution-674-513@indico.ihep.su
DESCRIPTION:https://indico.ihep.su/event/674/contributions/513/
LOCATION:
URL:https://indico.ihep.su/event/674/contributions/513/
END:VEVENT
BEGIN:VEVENT
SUMMARY:BSM physics and cosmology
DTSTART;VALUE=DATE-TIME:20221122T105000Z
DTEND;VALUE=DATE-TIME:20221122T113000Z
DTSTAMP;VALUE=DATE-TIME:20240720T002101Z
UID:indico-contribution-674-514@indico.ihep.su
DESCRIPTION:Speakers: M.Yu. Khlopov (Rostov-on-Don/Moscow/Paris)\nhttps:
//indico.ihep.su/event/674/contributions/514/
LOCATION:
URL:https://indico.ihep.su/event/674/contributions/514/
END:VEVENT
BEGIN:VEVENT
SUMMARY:New Wine in an Old Bottle? Surprise with Angular Momentum
DTSTART;VALUE=DATE-TIME:20221124T085500Z
DTEND;VALUE=DATE-TIME:20221124T093000Z
DTSTAMP;VALUE=DATE-TIME:20240720T002101Z
UID:indico-contribution-674-501@indico.ihep.su
DESCRIPTION:Speakers: Koba Turashvili ()\nWe analyzed mathematical conditi
ons that are used in obtaining the eigenvalue spectrum of the orbital angu
lar momentum operator in non-relativistic quantum mechanics. As it turns o
ut\, if one retains only those conditions that are the mathematical realiz
ation of physical requirements\, the eigenvalue spectrum is discrete\, adm
itting integer\, as well as non-integer eigenvalues. Relation for the eige
nvalues reads |m| = L - k\, where L is the eigenvalue of the square of the
angular momentum operator\, m is the eigenvalue of the third component of
the angular momentum operator and k are the integers that do not contradi
ct the non-negativity of |m|. The eigenfunctions corresponding to this sp
ectrum\, form an orthonormalized basis and the Hilbert space of physical s
tates can be constructed through them. As an auxiliary task\, the uniquene
ss of the exponential function of the complex variable and its invariance
with regard of axes rotations at 2π was considered. It is shown that the
well-known Euler-De Moivre prescription used to define the power function
of the complex variable as a single-valued function is just one of the spe
cial cases for unambiguously determining power function with the non-integ
er exponent\, spontaneously breaking invariance of the initial expression
with regard rotations at 2π for non-integer exponents. We present another
prescription for uniquely defining power function of the complex variable
in the framework of which the rotational invariance is preserved for inte
ger as well as non-integer exponents. \nMain point is that from quantum me
chanics it does not follow that the eigenvalues of the angular momentum op
erator are necessarily integer.\n\nhttps://indico.ihep.su/event/674/contri
butions/501/
LOCATION:
URL:https://indico.ihep.su/event/674/contributions/501/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Unfree gauge symmetry
DTSTART;VALUE=DATE-TIME:20221124T072000Z
DTEND;VALUE=DATE-TIME:20221124T080000Z
DTSTAMP;VALUE=DATE-TIME:20240720T002101Z
UID:indico-contribution-674-507@indico.ihep.su
DESCRIPTION:Speakers: Simon Lyakhovich (Tomsk State University\, Russia)\n
The gauge symmetry is said unfree if the gauge transformation leaves the a
ction\nfunctional unchanged provided for the gauge parameters are constrai
ned by the system of partial\ndifferential equations. The best known examp
le of this phenomenon is the volume preserving\ndiffeomorphism being the g
auge symmetry of unimodular gravity (UG). Various extensions are\nknown of
the UG\, including the higher spin analogs – all with unfree gauge symm
etry. In this\ntalk\, we begin with noticing the common features shared by
all the known examples of unfree\ngauge symmetry. In particular\, all the
se field theories admit ``global conserved quantities’’ that\nare unre
lated to any conserved local current. The simplest example is the cosmolog
ical constant\nin the UG\, We find previously unknown higher spin analogs
of Lambda. After this empirical\nintroduction\, we work out the structure
relations of algebra of general unfree gauge symmetry. It\nturns out that
the existence of the global conserved quantities originates from this alge
bra\, being\nin a sense modification of the second Noether theorem for the
case of unfree gauge symmetry.\nProceeding from the unfree gauge symmetry
algebra we deduce the modification of the Faddeev-\nPopov quantization ru
les accounting for the operators of gauge parameter constraints. Also the\
nBV-BRST field-antifield formalism is modified to account for the unfree g
auge symmetry. The\nunfree gauge symmetry is also considered from the pers
pective of constrained Hamiltonian\nformalism. The structure functions are
identified in the involution ralations such that are\nresponsible for the
equations imposed on the gauge parameters. Hamiltonian BFV-BRST\nformalis
m is adjusted to account for the gauge parameter constraints.\n\nhttps://i
ndico.ihep.su/event/674/contributions/507/
LOCATION:
URL:https://indico.ihep.su/event/674/contributions/507/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Contemporary status of inflation
DTSTART;VALUE=DATE-TIME:20221122T064500Z
DTEND;VALUE=DATE-TIME:20221122T073000Z
DTSTAMP;VALUE=DATE-TIME:20240720T002101Z
UID:indico-contribution-674-505@indico.ihep.su
DESCRIPTION:Speakers: Alexey Starobinsky (Landau ITP\, Chernogolovka\, Ru
ssia)\nAt the present state-of-the-art\, the simplest inflationary models\
, based either on scalar fields in General Relativity or on modified f(R)
gravity\, which produce the best fit to all existing observational data\,
require only one dimensionless parameter taken from observations. These mo
dels include the pioneer $R+R^2$ one [1]\, the Higgs model\, and the mixed
$R^2$-Higgs model that has been shown to be effectively one-parameter\, t
oo [2]. They predict scale-free and close to scale-invariant power spectra
of primordial scalar perturbations and gravitational waves generated duri
ng inflation. Their target prediction for the tensor-to-scalar ratio is $r
=3(1 - n_s)^2 = 0.004$. The difference between these models is in their po
st-inflationary behaviour which becomes especially interesting and complic
ated in the mixed R2-Higgs case [3\,4]. Still future observations\, in par
ticular discovery of primordial black holes\, may prove that the primordia
l scalar power spectrum has additional local peaks what requires at least
two new parameters. I discuss mechanisms to produce such features includin
g the recently proposed one which arise in many-field inflation with a lar
ge non-minimal kinetic term of an inflaton field leaving inflation before
its end [5]. In this case\, in addition to PBHs\, small-scale secondary gr
avitational waves are generated\, too. As for local non-scale-free feature
s at cosmological scales\, the present CMB data do not favor them\, but ar
e not able to exclude them completely [6].\n\n1. A. A. Starobinsky. Phys.
Lett. B 91\, 99 (1980).\n2. M. He\, A. A. Starobinsky\, J. Yokoyama. JCAP
1805\, 064 (2018)\; arXiv:1804.00409.\n3. M. He\, R. Jinno\, K. Kamada\, S
. C. Park\, A. A. Starobinsky\, J. Yokoyama. Phys. Lett. B 791\, 36 (2019)
\; arXiv:1812.10099.\n4. M. He\, R. Jinno\, K. Kamada\, A. A. Starobinsky\
, J. Yokoyama. JCAP 2101\, 066 (2021)\; arXiv:2007.10369.\n5. M. Braglia\,
D. K. Hazra\, F. Finelli\, G. F. Smoot\, L. Sriramkumar\, A. A. Starobins
ky. JCAP 2008\, 001 (2020)\; arXiv:2005.02895.\n6. D. K. Hazra\, D. Paolet
ti\, I. Debono\, A. Shafieloo\, G. F. Smoot\, A. A. Starobinsky\, JCAP 211
2\, 038 (2021)\; arXiv:2107.09460.\n\nhttps://indico.ihep.su/event/674/con
tributions/505/
LOCATION:
URL:https://indico.ihep.su/event/674/contributions/505/
END:VEVENT
END:VCALENDAR