The Unruh effect in quantum information beyond the single-mode approximation
Quantum Physics
2017-07-28 v2 General Relativity and Quantum Cosmology
Abstract
We address the validity of the single-mode approximation that is commonly invoked in the analysis of entanglement in non-inertial 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 approximation 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.
Cite
@article{arxiv.1007.4670,
title = {The Unruh effect in quantum information beyond the single-mode approximation},
author = {D. E. Bruschi and J. Louko and E. Martin-Martinez and A. Dragan and I. Fuentes},
journal= {arXiv preprint arXiv:1007.4670},
year = {2017}
}
Comments
revtex4, 3 figures, I.F. previously published as Fuentes-Guridi and Fuentes-Schuller. Minor changes and Journal reference added