Particle Production and Universal Thermodynamics
General Physics
2016-05-04 v3
Abstract
In the present work, particle creation mechanism has been employed to the Universe as a thermodynamical system. The Universe is considered to be a spatially flat FRW model and cosmic fluid is chosen as a perfect fluid with a barotropic equation of state -- . By proper choice of the particle creation rate, expressions for the entropy and temperature have been determined at various stages of evolution of the Universe. Finally, using the deceleration parameter as a function of the redshift parameter based on recent observations, the particle creation rate has been evaluated and its variation at different epochs have been shown graphically.
Keywords
Cite
@article{arxiv.1402.6944,
title = {Particle Production and Universal Thermodynamics},
author = {Subhajit Saha and Subenoy Chakraborty},
journal= {arXiv preprint arXiv:1402.6944},
year = {2016}
}
Comments
18 pages, 13 figures