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Dr. Andre Eckardt (Max-Planck-Institut fuer Physik komplexer Systeme, Dresden) pranešimas "Odd Bose condensation in non-equilibrium steady states"
Trečiadienį 11 val. 432 k įvyks Instituto Jungtinis teorinis seminaras.
Dr. Andre Eckardt (Max-Planck-Institut fuer Physik komplexer Systeme, Dresden) skaitys pranešimą tema:
"Odd Bose condensation in non-equilibrium steady states"
Pranešimo santrauka:
Bose-Einstein
condensation, the macroscopic occupation of a single quantum state,
appears in equilibrium quantum statistical mechanics. We show that even
when a degenerate Bose gas is driven into a steady state far from
equilibrium, e.g. by time-periodic driving in combination with a thermal
bath, Bose-Einstein condensation survives in a generalized form [1]:
the unambiguous selection of an odd number of states acquiring large
occupations.
We study the effect in driven-dissipative model systems, including tight-binding chains. We find anomalously long-range coherence in one dimension and propose a quantum switch for heat conductivity based on shifting between one and three Bose selected states.
[1] D. Vorberg, W. Wustmann, R. Ketzmerick, A. Eckardt, PRL 111, 240405 (2013)
We study the effect in driven-dissipative model systems, including tight-binding chains. We find anomalously long-range coherence in one dimension and propose a quantum switch for heat conductivity based on shifting between one and three Bose selected states.
[1] D. Vorberg, W. Wustmann, R. Ketzmerick, A. Eckardt, PRL 111, 240405 (2013)
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