Unruh effect in quantum information beyond the single-mode approximation

David E. Bruschi, Jorma Louko, Eduardo Martín-Martínez, Andrzej Dragan, and Ivette Fuentes
Phys. Rev. A 82, 042332 – Published 26 October 2010

Abstract

We address the validity of the single-mode approximation that is commonly invoked in the analysis of entanglement in noninertial frames and in other relativistic quantum-information scenarios. We show that the single-mode approximation is not valid for arbitrary states, finding corrections to previous studies beyond such approximations in the bosonic and fermionic cases. We also exhibit a class of wave packets for which the single-mode approximation is justified subject to the peaking constraints set by an appropriate Fourier transform.

  • Figure
  • Figure
  • Figure
  • Received 27 July 2010

DOI:https://doi.org/10.1103/PhysRevA.82.042332

©2010 American Physical Society

Authors & Affiliations

David E. Bruschi1, Jorma Louko1, Eduardo Martín-Martínez2, Andrzej Dragan3, and Ivette Fuentes1,*

  • 1School of Mathematical Sciences, University of Nottingham, Nottingham NG7 2RD, United Kingdom
  • 2Instituto de Física Fundamental, Consejo Superior de Investigaciones Científicas, Serrano 113-B, E-28006 Madrid, Spain
  • 3Institute of Theoretical Physics, University of Warsaw, Hoża 69, PL-00-049 Warsaw, Poland

  • *Previously known as Fuentes-Guridi and Fuentes-Schuller.

Article Text (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand
Issue

Vol. 82, Iss. 4 — October 2010

Reuse & Permissions
Access Options
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review A

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×