XXXVIII International Workshop on High Energy Physics and Field Theory “Current issues in gravitation and cosmology”

Сессия

Morning session 1

1

24 нояб. 2026 г., 09:00

Описание

Morning session (November 24)

10. Introductory greeting

Mr Vladimir Petrov (IHEP)

24.11.2026, 09:00

11. Ultra-High-Energy Cosmic Rays from Superheavy Dark Matter in $R^2$-Modified Gravity

Elena Arbuzova (Dubna State University and Novosibirsk State University)

24.11.2026, 09:10

Abstract.
The origin of ultra-high-energy cosmic rays (UHECRs) with energies above $10^{20}$ eV is still unknown, since standard stellar mechanisms are insufficient to account for their production. We propose an alternative framework, exploring the possibility that these extremely high-energy particles originate from superheavy dark matter (SHDM). By investigating cosmological evolution...

12. K-essence Cosmology: Bridging Emergent Geometry, Gravitational-Wave Physics, and Precision Cosmology

GOUTAM MANNA (Prabhat Kumar College, Contai)

24.11.2026, 09:55

Abstract
Modern precision cosmology is now accurate enough that even small departures from the standard picture can be tested, especially when we combine electromagnetic observations with gravitational waves. In this overview talk, we present our recent work on K-essence cosmology, where a non-canonical scalar field can simultaneously shape cosmic expansion and endow spacetime with an...

13. The correspondence of generalized entropic cosmology with F(T) and F(Q) gravity

Sergey Odintsov (Space Sciences Institute. (ICE-CSIC) and ICREA, Barcelona)

24.11.2026, 10:40

Abstract
Entropic cosmology based on generalised entropy due to S.~Nojiri, S.~D.~Odintsov and V.~Faraoni, %``From nonextensive statistics and black hole entropy to the holographic dark universe,'' Phys. Rev. D \textbf{105} (2022) no.4, 044042 doi:10.1103/PhysRevD.105.044042 is considered. All known non-extreme entropies (Tsallis, Renyi, Barrow, loop cosmology, etc) are particular cases of...

14. Gravity-thermodynamics connection: relevance, and possible experimental signatures

Alessandro Pesci

24.11.2026, 11:25

Abstract
After the theoretical discovery of Hawking's radiation, the ensuing intriguing connection between gravity and thermodynamics, has been, for more than half a century now, a prominent theme of research, in the quest for an understanding of the intimate nature of spacetime. While recalling some aspects of this endeavour, including the so-called holographic principle which somehow...

15. Simulation of dark matter in the RS-type model

Mr Vladimir Petrov (IHEP)

24.11.2026, 12:10

Abstract
We show how a massive body on the "second" brane could mimic a "dark matter" effect.
Links
Can black holes be produced at high-energy colliders?
V.A. Petrov(Serpukhov, IHEP) (Jul, 2005) Contribution to: HEPFT 2004
• e-Print: gr-qc/0507133 [gr-qc]

16. Light Dark Matter (NA64 Coll.)

nikolay krasnikov (Institute for Nuclear Research RAS)

24.11.2026, 12:35

Abstract
I shall review both theoretical and experimental aspects of the light dark matter search