粒子产生与普适热力学
Particle Production and Universal Thermodynamics
摘要：
在目前的工作中，粒子产生机制已被用于宇宙作为一个物理系统。宇宙被认为是一个空间平坦的FRW模型，宇宙流体被选为正压状态方程为$p = (γ-1)ρ$的理想流体。通过适当选择粒子产生率，确定了宇宙演化各个阶段的熵和温度的表达式。最后，使用减速参数$q$作为红移参数$z$的函数的基础上，最近的观察，粒子的产生率已被评估和它的变化在不同的时代已经显示图形。
英文摘要：
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 -- $p = (γ-1)ρ$. 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 $q$ as a function of the redshift parameter $z$ based on recent observations, the particle creation rate has been evaluated and its variation at different epochs have been shown graphically.
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