论文标题
在静态和球体对称时空中违反明确的洛伦兹
Explicit Lorentz violation in a static and spherically-symmetric spacetime
论文作者
论文摘要
洛伦兹的违规是由量子重力激励的，它通常由非动力张量描述。在这项工作中，研究了洛伦兹违反一般相对性扩展的洛伦兹，其中一对非动力张量的伴侣向Weyl张量。在真空中发现了一个静态和球形对称溶液的家族，证实在动态空间中存在明显的Lorentz违反的一致解决方案。这些解决方案产生了重力红移的非常规依赖性，这反过来又导致了这种非动力张量的第一范围，而不依赖早期宇宙的物理学。此外，这项工作中获得的界限在相似的非动力张量的限制方面具有竞争力。
Lorentz violation is motivated by quantum gravity and it is generically described by nondynamical tensors. In this work a Lorentz violating extension of general relativity is studied where a nondynamical tensor couples to the Weyl tensor. A family of static and spherically symmetric solutions in vacuum is found, confirming that there are consistent solutions with explicit Lorentz violation in dynamical spacetimes. These solutions produce an unconventional dependence of the gravitational redshift, which, in turn, leads to the first bounds on such nondynamical tensor that do not rely on the physics of the early universe. Moreover, the bounds obtained in this work are competitive with respect to limits on similar nondynamical tensors.
