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Title:

Momentum-Space Entanglement and Loschmidt Echo in Luttinger Liquids after a Quantum Quench

Document type:
Zeitschriftenaufsatz
Author(s):
Dóra, Balázs; Lundgren, Rex; Selover, Mark; Pollmann, Frank
Abstract:
Luttinger liquids (LLs) arise by coupling left- and right-moving particles through interactions in one dimension. This most natural partitioning of LLs is investigated by the momentum-space entanglement after a quantum quench using analytical and numerical methods. We show that the momentum-space entanglement spectrum of a LL possesses many universal features both in equilibrium and after a quantum quench. The largest entanglement eigenvalue is identical to the Loschmidt echo, i.e., the overlap...     »
Journal title:
Physical Review Letters 2016-06
Year:
2016
Journal volume:
117
Journal issue:
1
Fulltext / DOI:
doi:10.1103/physrevlett.117.010603
Publisher:
American Physical Society (APS)
E-ISSN:
0031-90071079-7114
Date of publication:
29.06.2016
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