English

Holographic equipartition and the maximization of entropy

General Relativity and Quantum Cosmology 2017-09-20 v2

Abstract

\begin{abstract} The accelerated expansion of the universe can be interpreted as a tendency to satisfy the holographic equipartition. It can be expressed by a simple law, ΔV=Δt(NsurfϵNbulk),\Delta V = \Delta t\left(N_{surf}-\epsilon N_{bulk}\right), where VV is the Hubble volume in Plank units, tt is the cosmic time plank units and Nsurf/bulkN_{surf/bulk} is the degrees of freedom on the horizon/bulk of the universe. We show that this holographic equipartition law effectively implies the maximization of entropy. In the cosmological context, a system that obeys the holographic equipartition law behaves as an ordinary macroscopic system that proceeds to an equilibrium state of maximum entropy. We consider the standard Λ\LambdaCDM model of the universe and have shown that it is consistent with the holographic equipartition law. Analyzing the entropy evolution we find that it also proceeds to an equilibrium state of maximum entropy.

Keywords

Cite

@article{arxiv.1702.02787,
  title  = {Holographic equipartition and the maximization of entropy},
  author = {Krishna P B and Titus K Mathew},
  journal= {arXiv preprint arXiv:1702.02787},
  year   = {2017}
}

Comments

16 pages, 4 figures