Lorenzo Rosso 1 Alberto Biella 1 Leonardo Mazza 1
Lorenzo Rosso, Alberto Biella, Leonardo Mazza. The one-dimensional Bose gas with strong two-body losses: the effect of the harmonic confinement. SciPost Physics, SciPost Foundation, 2022, 12 (1), pp.044. ⟨10.21468/SciPostPhys.12.1.044⟩. ⟨hal-03738536⟩
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.
- 1. LPTMS – Laboratoire de Physique Théorique et Modèles Statistiques