2003/05/31 by Saulo Carneiro
Physics and Astronomy · #gr-qc #astro-ph #hep-th
paper · pdf · doi:10.1142/s0218271803004158
published as Int.J.Mod.Phys. D12 (2003) 1669-1674 · Version to appear in the GRF2003 Special Issue of IJMPD
arxiv created 2003/07/03 · arxiv updated 2009/11/30
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.