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Hamiltonian dynamics and the entropy of the gravitational field

Authors
Journal
Physics Letters A
0375-9601
Publisher
Elsevier
Publication Date
Volume
224
Identifiers
DOI: 10.1016/s0375-9601(96)00841-9
Keywords
  • General Physics
Disciplines
  • Astronomy
  • Physics

Abstract

Abstract We take a statistical mechanics approach to investigate the function S = In Ω as a possible “gravitational entropy”, where Ω is the phase-space volume bounded by a Hamiltonian H. We calculate Ω for several cosmological models, attributing entropy to a lack of knowledge in the exact field configuration. We also compare our results with Penrose's C 2 hypothesis and the Bekenstein-Hawking entropy for black holes.

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