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

Autor:	Simons, Laurent H. A., Wouters, Michiel, Tempere, Jacques
Rok vydání:	2024
Předmět:	Condensed Matter - Quantum Gases
Druh dokumentu:	Working Paper
Popis:	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 for strong impurity-atom interactions, the polaron can become localized to a single droplet, behaving like a small solid-state polaron. Comment: 8 pages, 5 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2407.03505 Zobrazit plný text záznamu View this record from Arxiv