6533b82afe1ef96bd128c206
RESEARCH PRODUCT
Universal transport dynamics in a quenched tunnel-coupled Luttinger liquid
Roberta CitroMaura SassettiF. M. GambettaFabio Cavalieresubject
High Energy Physics::LatticeElectron interactionFOS: Physical sciences01 natural sciences010305 fluids & plasmasCondensed Matter Physics; Electronic Optical and Magnetic MaterialsCondensed Matter - Strongly Correlated ElectronsLuttinger liquid0103 physical sciencesElectronicOptical and Magnetic MaterialsTunneling current010306 general physicsOhmic contactElectronic Optical and Magnetic Materials; Condensed Matter PhysicsPhysicsCondensed Matter::Quantum GasesCondensed matter physicsStrongly Correlated Electrons (cond-mat.str-el)Transport dynamicsCondensed Matter PhysicsCondensed Matter::Mesoscopic Systems and Quantum Hall EffectQuantum Gases (cond-mat.quant-gas)Condensed Matter::Strongly Correlated ElectronsTransient (oscillation)Condensed Matter - Quantum GasesFermi Gamma-ray Space Telescopedescription
The transport dynamics of a quenched Luttinger liquid tunnel-coupled to a fermionic reservoir is investigated. In the transient dynamics, we show that for a sudden quench of the electron interaction universal power-law decay in time of the tunneling current occurs, ascribed to the presence of entangled compound excitations created by the quench. In sharp contrast to the usual non universal power-law behavior of a zero-temperature non-quenched Luttinger liquid, the steady state tunneling current is ohmic and can be explained in terms of an effective quench-activated heating of the system. Our study unveils an unconventional dynamics for a quenched Luttinger liquid that could be identified in quenched cold Fermi gases.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2016-06-27 |