Fluctuation-Dissipation Theorem in an Isolated System of Quantum Dipolar Bosons after a Quench

Authors

Ehsan Khatami, University of California, Santa CruzFollow
Guido Pupillo, Université de Strasbourg and CNRS
Mark Srednicki, University of California, Santa Barbara
Marcos Rigol, The Pennsylvania State University

Document Type

Article

Publication Date

July 2013

Publication Title

Physical Review Letters

Volume

111

Issue Number

5

First Page

050403

Last Page

050408

DOI

10.1103/PhysRevLett.111.050403

Keywords

Fluctuation, Dissipation, Theorem, Isolated, System, Quantum, Quench

Disciplines

Astrophysics and Astronomy | Physical Sciences and Mathematics | Physics

Abstract

We examine the validity of fluctuation-dissipation relations in isolated quantum systems taken out of equilibrium by a sudden quench. We focus on the dynamics of trapped hard-core bosons in one-dimensional lattices with dipolar interactions whose strength is changed during the quench. We find indications that fluctuation-dissipation relations hold if the system is nonintegrable after the quench, as well as if it is integrable after the quench if the initial state is an equilibrium state of a nonintegrable Hamiltonian. On the other hand, we find indications that they fail if the system is integrable both before and after quenching.

Comments

© 2013 American Physical Society DOI:10.1103/PhysRevLett.111.050403

Recommended Citation

Ehsan Khatami, Guido Pupillo, Mark Srednicki, and Marcos Rigol. "Fluctuation-Dissipation Theorem in an Isolated System of Quantum Dipolar Bosons after a Quench" Physical Review Letters (2013): 050403-050408. https://doi.org/10.1103/PhysRevLett.111.050403