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Proposal for measuring the finite-temperature Drude weight of integrable systems
Karrasch, Christoph (Avtor), Prosen, Tomaž (Avtor), Heidrich-Meisner, Fabian (Avtor)

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Izvleček
Integrable models such as the spin-1/2 Heisenberg chain, the Lieb-Liniger, or the one-dimensional Hubbard model are known to avoid thermalization, which was also demonstrated in several quantum-quench experiments. Another dramatic consequence of integrability is the zero-frequency anomaly in transport coefficients, which results in ballistic finite-temperature transport, despite the presence of strong interactions. While this aspect of nonergodic dynamics has been known for a long time, there has so far not been any unambiguous experimental realization thereof. We make a concrete proposal for the observation of ballistic transport via local quantum-quench experiments in fermionic quantum-gas microscopes. Such an experiment would also unveil the coexistence of ballistic and diffusive transport channels in one and the same system and provide a means of measuring finite-temperature Drude weights. The connection between local quenches and linear-response functions is established via time-dependent Einstein relations.

Jezik:Angleški jezik
Ključne besede:quantum mechanics
Tipologija:1.01 - Izvirni znanstveni članek
Organizacija:FMF - Fakulteta za matematiko in fiziko
Leto izida:2017
Založnik:American Physical Society
Št. strani:Str. 060406-1-060406-6
Številčenje:Vol. 95, iss. 6
UDK:530.145
ISSN pri članku:2469-9950
DOI:10.1103/PhysRevB.95.060406 Povezava se odpre v novem oknu
COBISS.SI-ID:3106148 Povezava se odpre v novem oknu
Avtorske pravice:American Physical Society
Število ogledov:834
Število prenosov:635
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Gradivo je del revije

Naslov:Physical review
Založnik:American Physical Society
ISSN:2469-9950
COBISS.SI-ID:2997348 Povezava se odpre v novem oknu

Gradivo je financirano iz projekta

Financer:EC - European Commission
Program financ.:H2020
Številka projekta:694544
Naslov:Open many-body non-equilibrium systems
Akronim:OMNES

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Jezik:Slovenski jezik
Ključne besede:kvantna mehanika

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