Work

Polarons in supersolids: Path-integral treatment of an impurity in a one-dimensional dipolar supersolid

Year: 2025

Type: article

Abstract: The supersolid phase of a dipolar Bose-Einstein condensate has an intriguing excitation spectrum displaying a band structure. Here, the dressing of an impurity in a one-dimensional dipolar supersolid with the excitations of the supersolid is studied. The ground-state energy of the supersolid polaron is calculated using a variational path integral approach, which obtained accurate results for other polaron systems within the Bogoliubov and Fr\"ohlich approximations. A divergence is observed at the superfluid-supersolid phase transition. The polaron radius is also computed, showing that, as a function of impurity-atom interactions, the polaron can become localized to a single droplet, behaving like a small solid-state polaron.

Source: Physical review. B./Physical review. B

DOI: 10.1103/physrevb.111.054524

Authors: Laurent H. A. Simons, Michiel Wouters, Jacques Tempere

Institution: University of Antwerp

Language: English

Topic: Cold Atom Physics and Bose-Einstein Condensates

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funders: Fonds Wetenschappelijk Onderzoek, Universiteit Antwerpen, Vlaamse regering

Awards: Vortex matter in superfluid Fermi gases with imbalance and spin-orbit coupling, Ab-initio calculations for anharmonic polarons in hydrides, Polaronic effects in superfluid Fermi gases, G8099884938, Spin-orbit entangled anharmonic polarons.