论文标题
温暖通货膨胀宇宙学模型的不可逆热力学描述
Irreversible thermodynamical description of warm inflationary cosmological models
论文作者
论文摘要
我们通过将开放系统的不可逆热力学与物质创造/ni灭的方式一起研究，研究标量场与辐射之间的相互作用。我们将标量场和辐射视为一种相互作用的两个组件宇宙学在均匀的，空间平坦的和各向同性的Friedmann-Robertson-Walker（FRW）宇宙中。与两个组成宇宙流体的重力场方程一起应用的开放系统的热力学会导致基本标量场田间辐射相互作用模型的泛化，这是温暖通货膨胀模型的理论基础，衰减（创造）压力明确地视为宇宙流体能量能量能量能量莫恩莫姆植物的零件。详细考虑了描述相干振荡标量波，具有恒定电势的标量场以及具有HIGGS类型电位的标量场的特定模型。对于每种情况，都可以获得具有标量场辐射相互作用的重力场方程的精确和数值解，它们显示了从加速膨胀阶段到减速阶段的过渡。还将对不可逆转的物质创建的温暖通货膨胀方案的理论预测与Planck 2018观察数据进行了详细比较，并获得了模型的自由参数的约束。
We investigate the interaction between scalar fields and radiation in the framework of warm inflationary models by using the irreversible thermodynamics of open systems with matter creation/annihilation. We consider the scalar fields and radiation as an interacting two component cosmological fluid in a homogeneous, spatially flat and isotropic Friedmann-Robertson-Walker (FRW) Universe. The thermodynamics of open systems as applied together with the gravitational field equations to the two component cosmological fluid leads to a generalization of the elementary scalar field-radiation interaction model, which is the theoretical basis of warm inflationary models, with the decay (creation) pressures explicitly considered as parts of the cosmological fluid energy-momentum tensor. Specific models describing coherently oscillating scalar waves, scalar fields with a constant potential, and scalar fields with a Higgs type potential are considered in detail. For each case exact and numerical solutions of the gravitational field equations with scalar field-radiation interaction are obtained, and they show the transition from an accelerating inflationary phase to a decelerating one. The theoretical predictions of the warm inflationary scenario with irreversible matter creation are also compared in detail with the Planck 2018 observational data, and constraints on the free parameters of the model are obtained.
