Year: 2024
Type: article
Abstract: Atom losses occur naturally during cold atoms experiments. Since this phenomenon is unavoidable, it is important to understand its effect on the remaining atoms. Here we investigate a toy model: a lattice gas of hard-core bosons subject to $K$-body losses (where $K=1,2,3,\ensuremath{\cdots},$ is the number of atoms lost in each loss event) on $K$ neighboring sites. In particular, we investigate the effect of losses on the rapidity distribution $\ensuremath{\rho}(k)$ of the atoms. Under the assumption that losses are weak enough so that the system relaxes between two loss events, we are able to determine the loss functional $F[\ensuremath{\rho}](k)$ encoding the loss process for $K$-body losses. We derive closed expressions for the cases of one- and two-body losses and show their effects on the evolution of the total number of particles. Then we add a harmonic trapping potential and study the evolution of the position-dependent rapidity distribution of this system by solving numerically the evolution equation for one-, two-, and three-body losses.
Source: Physical Review A
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
Funder: Agence Nationale de la Recherche
OpenAlex ID: W4383473345