Reference : Nonequilibrium effects on charge and energy partitioning after an interaction quench
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Physics
Physics and Materials Science
Nonequilibrium effects on charge and energy partitioning after an interaction quench
Calzona, Alessio mailto [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Physics and Materials Science Research Unit > ; University of Genova > > > ; SPIN-CNR Genova]
Gambetta, Filippo Maria [University of Genova > > > ; SPIN-CNR Genova]
Carrega, Matteo [NEST, Istituto Nanoscienze-CNR and Scuola Normale Superiore, Pisa]
Cavaliere, Fabio [University of Genova > > > ; SPIN-CNR Genova]
Sassetti, Maura [University of Genova > > > ; SPIN-CNR Genova]
Physical Review B
American Physical Society
Yes (verified by ORBilu)
[en] 1D interacting systems ; luttigner liquid ; quantum quench ; fractionalization ; steady state ; energy ; partitioning ; electron-electron interaction ; integrable system
[en] Charge and energy fractionalization are among the most intriguing features of interacting one-dimensional fermion systems. In this work we determine how these phenomena are modified in the presence of an interaction quench. Charge and energy are injected into the system suddenly after the quench, by means of tunneling processes with a noninteracting one-dimensional probe. Here, we demonstrate that the system settles to a steady state in which the charge fractionalization ratio is unaffected by the prequenched parameters. On the contrary, due to the postquench nonequilibrium spectral function, the energy partitioning ratio is strongly modified, reaching values larger than 1. This is a peculiar feature of the nonequilibrium dynamics of the quench process and it is in sharp contrast with the nonquenched case, where the ratio is bounded by 1.
MIUR-FIRB2013 – Project Coca (Grant No. RBFR1379UX) ; COST Action MP1209

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