Eduardo
Particle detectors and the zero mode of a quantum field
Abstract
We study the impact of the zero mode of a quantum field on the evolution of a particle detector. For a massless scalar field in a periodic cavity, we show that the impact of the zero mode on the Unruh-DeWitt detector and its derivative-coupling generalization is necessarily nonvanishing but can be made negligible in some limits, including those commonly occurring in nonrelativistic quantum optics. For the derivative-coupling detector this can be accomplished by just tuning the zero mode's initial state, but the standard Unruh-DeWitt detector requires a more subtle and careful tuning. Applications include an inertial detector with arbitrary velocity, where we demonstrate the regularity of the ultrarelativistic limit, and a detector with uniform acceleration. © 2014 American Physical Society.
Citation
Martín-Martínez, E., & Louko, J. (2014). Particle detectors and the zero mode of a quantum field. Physical Review D - Particles, Fields, Gravitation and Cosmology, 90(2), Article 024015. https://doi.org/10.1103/PhysRevD.90.024015
Journal Article Type | Article |
---|---|
Acceptance Date | Apr 22, 2014 |
Online Publication Date | Jul 3, 2014 |
Publication Date | Jul 3, 2014 |
Deposit Date | Oct 18, 2018 |
Publicly Available Date | Oct 18, 2018 |
Journal | Physical Review D - Particles, Fields, Gravitation and Cosmology |
Print ISSN | 1550-7998 |
Electronic ISSN | 1550-2368 |
Publisher | American Physical Society |
Peer Reviewed | Peer Reviewed |
Volume | 90 |
Issue | 2 |
Article Number | 024015 |
DOI | https://doi.org/10.1103/PhysRevD.90.024015 |
Public URL | https://nottingham-repository.worktribe.com/output/1174876 |
Publisher URL | https://journals.aps.org/prd/abstract/10.1103/PhysRevD.90.024015 |
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