Novel black holes in higher derivative gravity

TL;DR

This paper discovers new black hole solutions in higher derivative gravity that behave like Schwarzschild black holes at large masses but differ significantly at small scales, with potential implications for dark matter.

Contribution

It introduces a class of novel black holes in higher derivative gravity theories, highlighting their unique thermodynamic properties and potential role as dark matter candidates.

Findings

Black holes follow Schwarzschild behavior at large mass

Temperature peaks at a specific mass and approaches zero at small mass

Potential dark matter candidates evading gamma-ray burst constraints

Abstract

We find a class of novel black holes in higher derivative theory. The novel black holes follow behavior of~\sch\ ones at large mass limit, while dramatically differentiate from ~\sch\ ones for little holes because of the effects which may root in quantum gravity. The temperature of the hole takes maximum for a specific mass, which is related to the new sale introduced in the higher derivative theory, and goes to zero at little mass limit. This property leads to a significant observation that the novel black hole may be a candidate for dark matters evading constraint from $\gamma$-ray burst.