Towards a theory of entropy production in the little and big bang


Journal Article

We propose a broadly applicable formalism for the description of coarse grained entropy production in quantum mechanical processes. Our formalism is based on the Husimi transform of the quantum state, which encodes the notion that information about any quantum state is limited by the experimental resolution. We show in two analytically tractable cases (the decay of an unstable vacuum state and reheating after cosmic inflation) that the growth rate of the Wehrl entropy associated with the Husimi function approaches the classical Kolmogorov-Sinai' entropy. We also discuss various possible applications of our formalism, including the production of entropy in the early stages of a relativistic heavy ion collision.

Full Text

Duke Authors

Cited Authors

  • Kunihiro, T; Müller, B; Ohnishi, A; Schäfer, A

Published Date

  • March 1, 2009

Published In

Volume / Issue

  • 121 / 3

Start / End Page

  • 555 - 575

Electronic International Standard Serial Number (EISSN)

  • 1347-4081

International Standard Serial Number (ISSN)

  • 0033-068X

Digital Object Identifier (DOI)

  • 10.1143/PTP.121.555

Citation Source

  • Scopus