RT Journal Article
T1 Quantum quenches in disordered systems: approach to thermal equilibrium without a typical relaxation time
A1 Khatami, Ehsan
A1 Rigol, Marcos
A1 Relaño Pérez, Armando
A1 García García, Antonio M.
AB We study spectral properties and the dynamics after a quench of one-dimensional spinless fermions with short-range interactions and long-range random hopping. We show that a sufficiently fast decay of the hopping term promotes localization effects at finite temperature, which prevents thermalization even if the classical motion is chaotic. For slower decays, we find that thermalization does occur. However, within this model, the latter regime falls in an unexpected universality class, namely, observables exhibit a power-law (as opposed to an exponential) approach to their thermal expectation values.
PB American Physical Society
SN 1539-3755
YR 2012
FD 2012-05-15
LK https://hdl.handle.net/20.500.14352/44408
UL https://hdl.handle.net/20.500.14352/44408
LA eng
NO © 2012 American Physical Society. This research was supported by NSF under Grant No. OCI-0904597 (E. K. and M. R.) and by the U.S. Office of Naval Research (M. R.). A. M. G. acknowledges support from Galileo Galilei Institute, FCT (PTDC/FIS/111348/2009), Marie Curie Action (PIRG07-GA-2010-26817), and EPSRC (EP/I004637/1). A.R. acknowledges support from the Spanish Government Grants No. FIS2009-11621-C02-01 and No. FIS2009-07277.
NO NSF
NO U.S. Office of Naval Research
NO Galileo Galilei Institute
NO FCT
NO Marie Curie Action
NO EPSRC
NO Spanish Government
DS Docta Complutense
RD 6 abr 2025