High-Temperature Nonequilibrium Bose Condensation Induced by a Hot Needle
Publikation: Beitrag in Fachzeitschrift › Forschungsartikel › Beigetragen › Begutachtung
Beitragende
Abstract
We investigate theoretically a one-dimensional ideal Bose gas that is driven into a steady state far from equilibrium via the coupling to two heat baths: a global bath of temperature T and a "hot needle," a bath of temperature Th T with localized coupling to the system. Remarkably, this system features a crossover to finite-size Bose condensation at temperatures T that are orders of magnitude larger than the equilibrium condensation temperature. This counterintuitive effect is explained by a suppression of long-wavelength excitations resulting from the competition between both baths. Moreover, for sufficiently large needle temperatures ground-state condensation is superseded by condensation into an excited state, which is favored by its weaker coupling to the hot needle. Our results suggest a general strategy for the preparation of quantum degenerate nonequilibrium steady states with unconventional properties and at large temperatures.
Details
Originalsprache | Englisch |
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Aufsatznummer | 140602 |
Fachzeitschrift | Physical review letters |
Jahrgang | 119 |
Ausgabenummer | 14 |
Publikationsstatus | Veröffentlicht - 4 Okt. 2017 |
Peer-Review-Status | Ja |
Externe IDs
PubMed | 29053292 |
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