1994/03/11 by M. Kruczenski, Martı́n Kruczenski, L. E. Oxman +2 · 26 citations
Physics and Astronomy · #Advanced Thermodynamics and Statistical Mechanics #Classical mechanics #Cosmology #Cosmology and Gravitation Theories #Entropy (arrow of time) #Entropy production #Galaxies: Formation, Evolution, Phenomena #Granularity #Physics #Quantum mechanics #Statistical physics #Theoretical physics #gr-qc
paper · pdf · doi:10.1088/0264-9381/11/9/013
published in Classical and Quantum Gravity 11(9), 2317-2329 (IOP Publishing) · 19 pages (LaTeX)
arxiv created 1994/03/11 · openalex publication_date 1994/09/01 · arxiv updated 2010/04/06 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/06
We consider the generation of entropy when particle pairs are created at a cosmological level. Making a reduction via the particle number basis, we compute the classical limit for the entropy generation due to the evolution of the matter field fluctuations (squeeze transformation), obtaining that it is linear in the squeeze parameter for a general class of initial states. We also discuss the dependence of the generated entropy on the coarse graining criterion.