Breakdown of Thermalization in Finite One-Dimensional Systems

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Abstract

We use quantum quenches to study the dynamics and thermalization of hard core bosons in finite one-dimensional lattices. We perform exact diagonalizations and find that, far away from integrability, few-body observables thermalize. We then study the breakdown of thermalization as one approaches an integrable point. This is found to be a smooth process in which the predictions of standard statistical mechanics continuously worsen as the system moves toward integrability. We establish a direct connection between the presence or absence of thermalization and the validity or failure of the eigenstate thermalization hypothesis, respectively.

Original languageEnglish (US)
Article number100403
JournalPhysical Review Letters
Volume103
Issue number10
DOIs
StatePublished - Sep 2 2009

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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