https://doi.org/10.1140/epjc/s10052-023-12245-9
Regular Article - Theoretical Physics
Accelerated paths and Unruh effect: finite time detector response in (anti) de Sitter spacetime and Huygen’s principle
1
School of Data and Sciences, BRAC University, 66 Mohakhali, 1212, Dhaka, Bangladesh
2
Perimeter Institute for Theoretical Physics, N2L 2Y5, Waterloo, ON, Canada
3
Department of Physics and Astronomy, University of Waterloo, N2L 3G1, Waterloo, ON, Canada
4
Department of Physics, McGill University, H3A 2T8, Montreal, QC, Canada
5
Institute for Theoretical Physics, University of Amsterdam, Science Park 904, 1090 GL, Amsterdam, The Netherlands
6
Delta Institute for Theoretical Physics, PO Box 94485, Science Park 904, 1090 GL, Amsterdam, The Netherlands
7
Department of Physics, University of Nevada, Reno 1664 N Virginia St, 89557, Reno, NV, USA
Received:
5
May
2023
Accepted:
11
November
2023
Published online:
30
November
2023
We study the finite time response of an Unruh–DeWitt particle detector described by a qubit (two-level system) moving with uniform constant acceleration in maximally symmetric spacetimes. The D dimensional massless fermionic response function in de Sitter (dS) background is found to be identical to that of a detector linearly coupled to a massless scalar field in 2D dimensional dS background. Furthermore, we visit the status of Huygen’s principle in the Unruh radiation observed by the detector.
© The Author(s) 2023
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