Particle Production and Universal Thermodynamics
arXiv:1402.6944 · doi:10.1007/s10714-015-1964-7
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.
18 pages, 13 figures
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