Entanglement and its evolution following a quench in the presence of an energy current

Journal Article · Tue Nov 15 00:00:00 EST 2011 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.84.052317· OSTI ID:22093486

Das, Anirban; Haas, Stephan ^[1]; Garnerone, Silvano ^[2]

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1. Departments of Physics and Astronomy, University of Southern California, Los Angeles, California 90089 (United States)
2. Center for Quantum Information Science and Technology, University of Southern California, Los Angeles, California 90089 (United States)

We study the Ising spin chain with a Dzyaloshinskii-Moriya interaction, focusing on the static and dynamic properties of the entanglement entropy following a quantum quench. We show that the effects of the additional anisotropic interaction on the phase diagram and on the dynamics of the system are captured by the properties of the entanglement entropy. In particular, the model provides a way to study the quench dynamics in a system with an energy current. We consider quenches starting from an initial excited state of the Ising spin chain, and we analyze the effects of different initial conditions.

• OSTI ID: 22093486
• Journal Information: Physical Review. A, Vol. 84, Issue 5; Other Information: (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ANISOTROPY
ENTROPY
EVOLUTION
EXCITED STATES
ISING MODEL
PHASE DIAGRAMS
QUANTUM ENTANGLEMENT
QUANTUM MECHANICS
SPIN