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http://hdl.handle.net/2445/179876
Title: | Entanglement entropy in low-energy field theories at a finite chemical potential |
Author: | Morera Navarro, Ivan Frerot, Iréneé Polls Martí, Artur Juliá-Díaz, Bruno |
Keywords: | Gravetat quàntica Termodinàmica Quantum gravity Thermodynamics |
Issue Date: | 2-Jul-2020 |
Publisher: | American Physical Society |
Abstract: | We investigate the leading area-law contribution to entanglement entropy in a system described by a general Lagrangian with O(2) symmetry containing first- and second-order time derivatives, namely, breaking the Lorentz invariance. We establish a connection between the Higgs gap present in a symmetry-broken phase and the area-law term for the entanglement entropy in the general nonrelativistic case. Our predictions for the entanglement entropy and correlation length are successfully compared to numerical results in two paradigmatic systems: the Mott insulator to the superfluid transition for ultracold lattice bosons and the ground state of ferrimagnetic systems. |
Note: | Reproducció del document publicat a: https://doi.org/10.1103/PhysRevResearch.2.033016 |
It is part of: | Physical Review Research, 2020, vol. 2, num. 3, p. 033016 |
URI: | http://hdl.handle.net/2445/179876 |
Related resource: | https://doi.org/10.1103/PhysRevResearch.2.033016 |
ISSN: | 2643-1564 |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) Publicacions de projectes de recerca finançats per la UE |
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