Low-energy Lorentz violation from high-energy modified dispersion in inertial and circular motion
Low-energy Lorentz violation from high-energy modified dispersion in inertial and circular motion
We consider an Unruh-DeWitt detector in inertial and circular motion in Minkowski spacetime of arbitrary dimension, coupled to a quantized scalar field with the Lorentz-violating dispersion relation ω=|k|f(|k|/M†), where M↠is the Lorentz-breaking scale. Assuming that f dips below unity somewhere, we show that an inertial detector experiences large low-energy Lorentz violations in all spacetime dimensions greater than two, generalizing previous results in four dimensions. For a detector in circular motion, we show that a similar low-energy Lorentz violation occurs in three spacetime dimensions, and we lay the analytic groundwork for examining circular motion in all dimensions greater than three, generalizing previous work by Stargen, Kajuri and Sriramkumar in four dimensions. The circular motion results may be relevant for the prospects of observing the circular motion Unruh effect in analogue laboratory systems.
Louko, Jorma
60212164-bfdc-43f2-91b7-129b055cb5d5
Upton, Samuel D.
9afe447b-462b-4be8-9694-d8c5726fe020
15 January 2018
Louko, Jorma
60212164-bfdc-43f2-91b7-129b055cb5d5
Upton, Samuel D.
9afe447b-462b-4be8-9694-d8c5726fe020
Louko, Jorma and Upton, Samuel D.
(2018)
Low-energy Lorentz violation from high-energy modified dispersion in inertial and circular motion.
Physical Review D, 97 (2), [025008].
(doi:10.1103/PhysRevD.97.025008).
Abstract
We consider an Unruh-DeWitt detector in inertial and circular motion in Minkowski spacetime of arbitrary dimension, coupled to a quantized scalar field with the Lorentz-violating dispersion relation ω=|k|f(|k|/M†), where M↠is the Lorentz-breaking scale. Assuming that f dips below unity somewhere, we show that an inertial detector experiences large low-energy Lorentz violations in all spacetime dimensions greater than two, generalizing previous results in four dimensions. For a detector in circular motion, we show that a similar low-energy Lorentz violation occurs in three spacetime dimensions, and we lay the analytic groundwork for examining circular motion in all dimensions greater than three, generalizing previous work by Stargen, Kajuri and Sriramkumar in four dimensions. The circular motion results may be relevant for the prospects of observing the circular motion Unruh effect in analogue laboratory systems.
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Accepted/In Press date: 18 October 2017
e-pub ahead of print date: 10 January 2018
Published date: 15 January 2018
Identifiers
Local EPrints ID: 429508
URI: http://eprints.soton.ac.uk/id/eprint/429508
ISSN: 2470-0010
PURE UUID: 2645e762-8125-42b4-afb4-0c95852c3b47
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Date deposited: 28 Mar 2019 17:30
Last modified: 11 Apr 2024 17:51
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Author:
Jorma Louko
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