Back-reaction of Quantum fields in an Einstein Universe
Back-reaction of Quantum fields in an Einstein Universe
复制标题
爱因斯坦宇宙中量子场的反反应
DOI：
10.1103/physrevd.65.044028
复制
发表时间：
2001
期刊：
影响因子：
--
通讯作者：
M.B.Altaie
中科院分区：
文献类型：
--
作者：
M.B.Altaie
我研究静态爱因斯坦宇宙背景下有限温度无质量标量场和光子场的反反应效应。在每种情况下，我都找到了宇宙温度与其半径之间的关系。这种关系表现出一个最小半径，低于该半径就找不到爱因斯坦场方程的自洽解。最高温度标志着从真空主导时代到辐射主导时代的转变。给出了标量场情况下玻色-爱因斯坦凝聚的这种行为的解释。
I study the back-reaction effect of the finite-temperature massless scalar field and the photon field in the background of the static Einstein universe. In each case I find a relation between the temperature of the universe and its radius. This relation exhibits a minimum radius below which no self-consistent solution for the Einstein field equation can be found. A maximum temperature marks the transition from the vacuum dominated era to the radiation dominated era. An interpretation of this behavior in terms of Bose-Einstein condensation in the case of the scalar field is given.