Entropy Bounds, Holography and Generalized Second Law in Cosmology Academic Article uri icon


  • A new covariant" causal entropy bound" on entropy within a generic spacelike region of volume V, and energy E scales as VEV, the geometric mean of Bekenstein's S/ER and holographic S/A bounds, R being the linear size and A the boundary area of the region. In the case of limited gravity, Bekenstein's bound is the strongest while naive holography is the weakest. In the case of strong gravity, causal entropy bound and Bousso's holographic bound are stronger than Bekenstein's, while naive holography is too tight, and hence …

publication date

  • January 1, 2000