Helder Alexander
Entanglement of self-interacting scalar fields in an expanding spacetime
Alexander, Helder; de Souza, Gustavo; Mansfield, Paul; da Paz, I.G.; Sampaio, Marcos
Authors
Gustavo de Souza
Paul Mansfield
I.G. da Paz
Marcos Sampaio
Abstract
We evaluate self-interaction effects on the quantum correlations of field modes of opposite momenta for scalar $\lambda \phi^4$ theory in a two-dimensional asymptotically flat Robertson-Walker spacetime. Such correlations are encoded both in the von Neumann entropy defined through the reduced density matrix in one of the modes and in the covariance expressed in terms of the expectation value of the number operators for each mode in the evolved state. The entanglement between field modes carries information about the underlying spacetime evolution.
Citation
Alexander, H., de Souza, G., Mansfield, P., da Paz, I., & Sampaio, M. (2016). Entanglement of self-interacting scalar fields in an expanding spacetime. European Physical Society Letters, 115(1), Article 10006. https://doi.org/10.1209/0295-5075/115/10006
Journal Article Type | Article |
---|---|
Acceptance Date | Jul 13, 2016 |
Online Publication Date | Aug 3, 2016 |
Publication Date | Jul 1, 2016 |
Deposit Date | Sep 2, 2016 |
Publicly Available Date | Jul 1, 2017 |
Journal | Europhysics Letters |
Print ISSN | 0295-5075 |
Electronic ISSN | 1286-4854 |
Publisher | IOP Publishing |
Peer Reviewed | Peer Reviewed |
Volume | 115 |
Issue | 1 |
Article Number | 10006 |
DOI | https://doi.org/10.1209/0295-5075/115/10006 |
Public URL | https://durham-repository.worktribe.com/output/1377082 |
Related Public URLs | https://arxiv.org/abs/1607.03159 |
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Copyright Statement
This is an author-created, un-copyedited version of an article published in EPL (Europhysics Letters). IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at http://dx.doi.org/10.1209/0295-5075/115/10006
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