title: Luttinger-liquid universality in the time evolution after an interaction quench.
abstract: We provide evidence that the relaxation dynamics of one-dimensional, metallic Fermi systems resulting out of an abrupt amplitude change of the two-particle interaction has aspects which are universal in the Luttinger liquid sense: the leading long-time behavior of certain observables is described by universal functions of the equilibrium Luttinger liquid parameter and the renormalized velocity. We analytically derive those functions for the Tomonaga-Luttinger model and verify our hypothesis of universality by considering spinless lattice fermions within the framework of the density-matrix renormalization group.
authors.affiliation: Department of Physics, University of California, Berkeley, 95720, USA.
authors.forename: C
authors.initials: C
authors.lastname: Karrasch
authors.forename: J
authors.initials: J
authors.lastname: Rentrop
authors.forename: D
authors.initials: D
authors.lastname: Schuricht
authors.forename: V
authors.initials: V
authors.lastname: Meden