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arXiv 1111.6342gr-qcastro-ph.COhep-phhep-th
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广义Lorenz规范条件在矢量张量理论中的引入

Introduction of the generalized Lorenz gauge condition into the vector-tensor theory

Changjun Gao

摘要:

本文将量子电动力学中的广义洛仑兹规范条件引入到一般的矢量张量引力理论中。然后,我们探讨了宇宙演化和四维矢量场的静态球对称解。我们发现,如果矢量场与引力的耦合最小,则它表现为宇宙学常数。另一方面,如果矢量场与引力非极小耦合,则在空间平坦的Friedmann-Robertson-Walker宇宙背景中,矢量场可以表现为巨大的物质。但事实可能并非如此。弱能、强能和主能条件,经典和量子稳定性分析等都对参数施加了约束,物态方程也就受到了很大的约束。

英文摘要:

We introduce the generalized Lorentz gauge condition in the theory of quantum electrodynamics into the general vector-tensor theories of gravity. Then we explore the cosmic evolution and the static, spherically symmetric solution of the four dimensional vector field with the generalized Lorenz gauge. We find that, if the vector field is minimally coupled to the gravitation, it behaves as the cosmological constant. On the other hand, if it is nonminimally coupled to the gravitation, the vector field could behave as vast matters in the background of spatially flat Friedmann-Robertson-Walker Universe. But it may be not the case. The weak, strong and dominant energy conditions, the stability analysis of classical and quantum aspects would put constraints on the parameters and so the equation of state of matters would be greatly constrained.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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