An atom in front of Lorentz violating Kalb-Ramond black hole background

TL;DR

This paper explores how Lorentz violation affects acceleration radiation and entropy in a Kalb-Ramond black hole, revealing breaches of the equivalence principle and connections to symmetry breaking beyond general relativity.

Contribution

It introduces a detailed analysis of Lorentz violation effects on black hole radiation, entropy, and the interplay with conformal symmetry in the context of Kalb-Ramond black holes.

Findings

Lorentz violation modifies the amplitude and exponential factor of acceleration radiation.

The entropy structure resembles Bekenstein-Hawking entropy despite Lorentz-violating corrections.

Lorentz violation impacts the thermodynamic behavior and transition probabilities of atomic detectors.

Abstract

We investigate the role of Lorentz violation in the acceleration radiation produced when an atom falls into a Kalb-Ramond (KR) black hole and observe that the amplitude and an exponential (Planck-like) factor are both shaped by the Lorentz-violating parameter, indicating a breach of the equivalence principle and resembling characteristics observed in bumblebee gravity models. We further investigate how Lorentz violation and conformal symmetry work together to determine the thermodynamic behavior of the system and the implications for the equivalence principle by looking at the transition probabilities of a two-level atomic detector interacting with the black hole. These findings provide new information about the interaction of black hole entropy, symmetry breaking, and possible observational probes of novel physics beyond general relativity. The horizon brightening acceleration radiation (HBAR) entropy in the KR black hole spacetime is also calculated in detail. Although the corrections are very different from those in bumblebee gravity, our study demonstrates that even though Lorentz-violating events alter the entropy, it nevertheless maintains a structural resemblance to the ordinary Bekenstein-Hawking entropy.