The one-dimensional Bose gas with strong two-body losses: the effect of the harmonic confinement

Anno: 2022

Autori: Rosso L.; Biella A.; Mazza L.

Affiliazione autori: Univ Paris Saclay, CNRS, LPTMS, F-91405 Orsay, France; Univ Trento, INO CNR BEC Ctr, I-38123 Povo, Italy; Univ Trento, Dipartimento Fis, I-38123 Povo, Italy.

Abstract: We study the dynamics of a one-dimensional Bose gas in presence of strong two-body losses. In this dissipative quantum Zeno regime, the gas fermionises and its dynamics can be described with a simple set of rate equations. Employing the local density approximation and a Boltzmann-like dynamical equation, the description is extended to take into account an external potential. We show that in the absence of confinement the population is depleted in an anomalous way and that the gas behaves as a low-temperature classical gas. The harmonic confinement accelerates the depopulation of the gas and introduces a novel decay regime, which we thoroughly characterise.

Giornale/Rivista: SCIPOST PHYSICS

Volume: 12 (1)      Da Pagina: 044-1  A: 044-24

Maggiori informazioni: This work was initiated during the thematic trimester program Systems out of equilibrium at the Institut Henri Poincare. We are grateful to the IHP for hospitality and to Sorbonne University for support. D.B. acknowledges Michel Bauer and Jean-Bernard Zuber for regular discussions. M.M. thanks Tony Jin for initial collaboration on the project and, in particular, for his contributions to analysing the spectrum in the two-particle sector. This work was in part supported by CNRS, by the ENS, by the ANR project “ESQuisses”, contract number ANR-20-CE47-0014-01 and by the EPSRC under grant EP/S020527/1.
Parole chiavi: dissipation; driven
DOI: 10.21468/SciPostPhys.12.1.044

Citazioni: 20
dati da “WEB OF SCIENCE” (of Thomson Reuters) aggiornati al: 2025-05-18
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