On the vacuum entropy and the cosmological constant

Details On the vacuum entropy and the cosmological constant On the vacuum entropy and the cosmological constant

2003-05-21

arxiv.org/abs/gr-qc/0305081v2

Int.J.Mod.Phys. D12 (2003) 1669-1674

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

Version to appear in the GRF2003 Special Issue of IJMPD

Scientific paper

10.1142/S0218271803004158

It is generally accepted that the entropy of an asymptotically de Sitter universe is bounded by the area, in Planck units, of the de Sitter horizon. Based on an analysis of the entropy associated to the vacuum quantum fluctuations, we suggest that the existence of such a holographic bound constitutes a possible explanation for the observed value of the cosmological constant, theoretically justifying a relation proposed 35 years ago by Zel'dovich.

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