Sergei D. Odintsov - Unification of inflation with dark energy in axion F(R) gravity

#Seminar

Title: "Unification of inflation with dark energy in axion F(R) gravity. How fundamental is entropy"
Speaker: Sergei D. Odintsov (ICREA, ICE-CSIC, IEEC, Barcelona)

In the first part of my talk I explain how to unify all three dark components of the universe: inflation, dark energy and dark matter within realistic model of F(R) gravity. Dark matter is described by the axion and non-minimal coupling of axion with gravity is assumed. In the second part of my talk I will introduce generalised entropy construct which gives all known entropies Tsallis, Renyi, Loop Gravity one, Barrow, etc as particular examples. The application of generalised entropy for modified FRW cosmology and BH thermodynamics is discussed. It is shown that most consistent BH thermodynamics should be yet described by Bekenstein-Hawking entropy.