Work

A little excitement across the horizon

Year: 2022

Type: article

Abstract: We analyse numerically the transitions in an Unruh-DeWitt detector, coupled linearly to a massless scalar field, in radial infall in (3 + 1)-dimensional Schwarzschild spacetime. In the Hartle–Hawking and Unruh states, the transition probability attains a small local extremum near the horizon-crossing and is then moderately enhanced on approaching the singularity. In the Boulware state, the transition probability drops on approaching the horizon. The unexpected near-horizon extremum arises numerically from angular momentum superpositions, with a deeper physical explanation to be found.

Source: New Journal of Physics

DOI: 10.1088/1367-2630/ac9547

Authors: Keith K Ng, Chen Zhang, Jorma Louko, Robert B Mann

Institutions: Nanyang Technological University, University of Waterloo, University of Toronto, University of Nottingham, Perimeter Institute

Language: English

Topic: Black Holes and Theoretical Physics

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,255