paper

Analytical expression for a class of spherically symmetric solutions in Lorentz breaking massive gravity

arXiv:1503.08952 · doi:10.1088/0264-9381/33/11/115004

Abstract

We present a detailed study of the spherically symmetric solutions in Lorentz breaking massive gravity. There is an undetermined function in the action of Stückelberg fields , which should be resolved through physical means. In the general relativity, the spherically symmetric solution to the Einstein equation is a benchmark and its massive deformation also play a crucial role in Lorentz breaking massive gravity. will satisfy the constraint equation from the spherically symmetric Einstein tensor , if we maintain that any reasonable physical theory should possess the spherically symmetric solutions. The Stückelberg field is taken as a 'hedgehog' configuration , whose stability is guaranteed by the topological one. Under this ansätz, is reduced to . The functions for form a commutative ring . We obtain a general expression of solution to the functional differential equation with spherically symmetry if . If and , the functions form a subring . We show that the metric is Schwarzschild, AdS or dS if . When but , we will obtain some new metric solutions. Using the general formula and the basic property of function ring , we give some analytical examples and their phenomenological applications. Furthermore, we also discuss the stability of gravitational field by the analysis of Komar integral and the results of QNMs.

A typo is corrected. Some sentences are polished. 26pages, 1 figure. arXiv:1503.08952 [gr-qc]

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