Response of an Unruh-DeWitt detector near an extremal black hole

Article

Response of an Unruh-DeWitt detector near an extremal black hole

Conroy, A.; Taylor, P.

Phys. Rev. D 105(8), 22 (2022)

Abstract

We consider the response of an Unruh-DeWitt detector near an extremal charged black hole, modeling the near-horizon region of this extremal spacetime by the Bertotti-Robinson spacetime. The advantage of employing the Bertotti-Robinson limit is that the two-point functions for a massless scalar field are obtainable in closed form for the field in a number of quantum states of interest. We consider the detector coupled to a massless field in both the Boulware vacuum state and arbitrary thermal states, including the Hartle-Hawking state, and analyze the detector’s response for a broad range of trajectories. Particular attention is paid to the thermalization of the detector, the anti-Unruh and anti-Hawking effect.

Institute authors

Conroy, Aindriú

BibTeX

@article{UTF914,
  author        = {Conroy, A. and Taylor, P.},
  title         = {{Response of an Unruh-DeWitt detector near an extremal black hole}},
  journal       = {Phys. Rev. D},
  volume        = {105},
  number        = {8},
  pages         = {22},
  year          = {2022},
  month         = {4},
  doi           = {10.1103/PhysRevD.105.085001},
}