2004/12/20 by Yun Soo Myung · 2 citations
Mathematics · Physics and Astronomy · #Astronomy #Black Holes and Theoretical Physics #Classical mechanics #Cosmology #Cosmology and Gravitation Theories #Dark energy #Energy density #Entropy (arrow of time) #Event horizon #Hawking #Holographic principle #Holography #Horizon #Mathematics #Noncommutative and Quantum Gravity Theories #Physics #Quantum mechanics #Theoretical physics #Upper and lower bounds #Vacuum energy #astro-ph #hep-th
paper · pdf · doi:10.1016/j.physletb.2005.02.006
published as Phys.Lett. B610 (2005) 18-22 · 10 pages
arxiv created 2004/12/20 · openalex publication_date 2005/02/11 · arxiv updated 2010/04/05 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We discuss the relationship between holographic entropy bounds and gravitating systems. In order to obtain a holographic energy density, we introduce the Bekenstein–Hawking entropy SBH and its corresponding energy EBH using the Friedman equation. We show that the holographic energy bound proposed by Cohen et al. comes from the Bekenstein–Hawking bound for a weakly gravitating system. Also we find that the holographic energy density with the future event horizon deriving an accelerating universe could be given by vacuum fluctuations of the energy density.