Bulletin of the American Physical Society
APS March Meeting 2021
Volume 66, Number 1
Monday–Friday, March 15–19, 2021; Virtual; Time Zone: Central Daylight Time, USA
Session F27: Non-Equilibrium Physics with Cold Atoms and Molecules, Rydberg Gases, and Trapped Ions I
11:30 AM–2:30 PM,
Tuesday, March 16, 2021
Sponsoring
Units:
DAMOP DCMP
Chair: David Weld, University of California, Santa Barbara
Abstract: F27.00003 : Field tuning to avoid the heat death of a charge-density-wave chain*
11:54 AM–12:06 PM
Live
Presenter:
James Freericks
(Georgetown University)
Authors:
James Freericks
(Georgetown University)
Manuel Weber
(Georgetown University)
exotic phases far from equilibrium. However, the presence of many-body interactions or the coupling to a bath inevitably leads to heating, which drives the system towards a featureless infinite-temperature state, called the heat-death of the system. Finding ways to avoid this heat death are critical for many fields that rely on implementating Floquet-state engineering. Here we show that a charge-density-wave chain placed in a strong dc electric field develops a set of minibands with nontrivial distribution functions, as the current is prematurely driven to zero. This avoids the heat-death and creates a nontrivial nonequilibrium steady state, different from equilibrium states. In particular, we see situations where the minibands appear to thermalize independently of each other, or with a weak coupling between the minibands. Depending upon whether we have resonance conditions or not, we also see the heat death and the development of negative temperature states too. This work shows that one can engineer nontrivial nonequilibrium steady states when fermions are coupled to low-energy bosons.
*This work was supported by the Department of Energy, Basic Energy Sciences under grant number DE-FG02-08ER4654.
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