Strongly Correlated Fermions after a Quantum Quench

S. R. Manmana, S. Wessel, R. M. Noack, and A. Muramatsu
Phys. Rev. Lett. 98, 210405 – Published 25 May 2007

Abstract

Using the adaptive time-dependent density-matrix renormalization group method, we study the time evolution of strongly correlated spinless fermions on a one-dimensional lattice after a sudden change of the interaction strength. For certain parameter values, two different initial states (e.g., metallic and insulating) lead to observables which become indistinguishable after relaxation. We find that the resulting quasistationary state is nonthermal. This result holds for both integrable and nonintegrable variants of the system.

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  • Received 27 November 2006

DOI:https://doi.org/10.1103/PhysRevLett.98.210405

©2007 American Physical Society

Authors & Affiliations

S. R. Manmana1,2, S. Wessel1, R. M. Noack2, and A. Muramatsu1

  • 1Institut für Theoretische Physik III, Universität Stuttgart, Pfaffenwaldring 57, D-70550 Stuttgart, Germany
  • 2Fachbereich Physik, Philipps-Universität Marburg, D-35032 Marburg, Germany

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Issue

Vol. 98, Iss. 21 — 25 May 2007

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