Entanglement of Dirac fields in an expanding spacetime

Ivette Fuentes, Robert B. Mann, Eduardo Martín-Martínez, and Shahpoor Moradi
Phys. Rev. D 82, 045030 – Published 27 August 2010

Abstract

We study the entanglement generated between Dirac modes in a 2-dimensional conformally flat Robertson-Walker universe. We find radical qualitative differences between the bosonic and fermionic entanglement generated by the expansion. The particular way in which fermionic fields get entangled encodes more information about the underlying spacetime than the bosonic case, thereby allowing us to reconstruct the parameters of the history of the expansion. This highlights the importance of bosonic/fermionic statistics to account for relativistic effects on the entanglement of quantum fields.

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  • Received 9 July 2010

DOI:https://doi.org/10.1103/PhysRevD.82.045030

© 2010 The American Physical Society

Authors & Affiliations

Ivette Fuentes1,*, Robert B. Mann2, Eduardo Martín-Martínez3, and Shahpoor Moradi4

  • 1School of Mathematical Sciences, University of Nottingham, Nottingham NG7 2RD, United Kingdom
  • 2Department of Physics, University of Waterloo, Waterloo, Ontario Canada N2L 3G1
  • 3Instituto de Física Fundamental, CSIC, Serrano 113-B, 28006 Madrid, Spain
  • 4Department of Physics, Razi University, Kermanshah, Iran

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

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Vol. 82, Iss. 4 — 15 August 2010

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