Hawking temperature and the emergent cosmic space

Abstract

The aim of this work is to model the evolution of the cosmic space based on thermodynamical parameters. The universe is considered to have an apparent horizon radius with a Kodama-Hayward temperature assigned to it. The method is founded on the fact proposed by Padmanabhan [1,2] that the subtraction of the surface and bulk degrees of freedom provides information on the cosmic space emergence. The fact of the matter is that in this approach the Raychaudhuri equation could even be obtained by the consideration of only thermodynamical parameters. As such, the standard general relativity is taken as the starting point where by implementing the standard cosmological equations we obtain a generalized evolutionary equation supporting emergence of the cosmic space. The method proposed in this work would provide basis for other cosmological models to have an emergent perspective.

9 pages, many improvements, to appear in Gen. Relativ. Gravit

References in corpus (10)

• Hawking Radiation of Apparent Horizon in a FRW Universe
• A Note on Thermodynamics of Black Holes in Lovelock Gravity
• Friedmann Equations from Entropic Force
• Cosmological apparent and trapping horizons
• Friedmann equations from emergence of cosmic space
• Generalized second law of thermodynamics in scalar-tensor gravity
• Emergent Friedmann equation from the evolution of cosmic space revisited
• Note on the emergence of cosmic space in modified gravities
• Hawking radiation from the cosmological horizon in a FRW universe
• Local Hawking temperature for dynamical black holes