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

Сессия

Afternoon session 4

4

25 нояб. 2026 г., 14:30

Описание

Afternoon session (November 25)

28. TBA (…topics: Dark matter, Dark energy, Cosmology …)

Dmitry Gorbunov (INR RAS)

25.11.2026, 14:30

...

29. Theoretical perspectives on the late-time cosmic acceleration in light of latest cosmological observations

YIFU CAI (University of Science and Technology of China)

25.11.2026, 15:15

Abstract
Astonishingly, it was discovered that distant Type Ia supernovae (SN Ia) were accelerating away at an increasing pace. This led to the great discovery of late-time cosmic acceleration and brought us the concept of dark energy, responsible for such a phenomenon. However, the underlying nature remains mysterious. Theoretically, modified gravity can be a framework to provide an...

30. Testing gravity and dark energy with the Dark Energy Spectroscopic Instrument

Cristhian Garcia Quintero (Center for Astrophysics Harvard-Smithsonian)

25.11.2026, 16:15

Abstract
Current discrepancies between datasets analyzed in the standard model open the possibility for beyond-LCDM model physics, such as evolving dark energy. However, departures from the standard theory of gravity itself can be potentially misinterpreted as dark energy. Fortunately, the growth of galaxy clustering data provides a way to distinguish between the two. In this talk, we...

31. The Cosmological Constant Problem and Unimodular Gravity

Julio Cesar Fabris (Universidade Federal do Espírito Santo)

25.11.2026, 17:00

Abstract
The standard cosmological model has been successful in describing the ob- served universe. It is a simple model that reproduces different observational data using only a few components of matter and energy. It is based on the Theory of General Relativity. However, this success is achieved by introducing a dark sector composed of dark matter and dark energy, components not yet di-...

32. Nonconservative theories of gravity

Hermano Velten (Universidade Federal de Ouro Preto)

25.11.2026, 17:45

Abstract
We review nonconservative theories of gravity with particular attention to f(R,T) theories (where T is the trace of the energy-momentum). We provide astrophysical and cosmological consequences of a nonvanishing four-divergence of the energy-momentum tensor.
Links
https://doi.org/10.3390/universe7020038 10.1016/j.dark.2023.101401

33. General Discussion

25.11.2026, 18:30

Discussion leader: Dmitry Gorbunov (INR RAS, Moscow)