Black hole solutions in mimetic Born-Infeld gravity

作者：Chen Che Yu^*; Bouhmadi Lopez Mariam; Chen Pisin

来源：European Physical Journal C, 2018, 78(1): 59.

DOI：10.1140/epjc/s10052-018-5556-z

The vacuum, static, and spherically symmetric solutions in the mimetic Born-Infeld gravity are studied. The mimetic Born-Infeld gravity is a reformulation of the Eddington-inspired-Born-Infeld (EiBI) model under the mimetic approach. Due to the mimetic field, the theory contains non-trivial vacuum solutions different from those in Einstein gravity. We find that with the existence of the mimetic field, the spacelike singularity inside a Schwarzschild black hole could be altered to a lightlike singularity, even though the curvature invariants still diverge at the singularity. Furthermore, in this case, the maximal proper time for a timelike radially-infalling observer to reach the singularity is found to be infinite.

• 出版日期2018-1-23