Exact result for the polaron mass in a one-dimensional Bose gas

Autor:	Ristivojevic, Zoran
Rok vydání:	2021
Předmět:	Condensed Matter - Quantum Gases Mathematical Physics Quantum Physics
Zdroj:	Phys. Rev. A 104, 052218 (2021)
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevA.104.052218
Popis:	We study the polaron quasiparticle in a one-dimensional Bose gas. In the integrable case described by the Yang-Gaudin model, we derive an exact result for the polaron mass in the thermodynamic limit. It is expressed in terms of the derivative with respect to the density of the ground-state energy per particle of the Bose gas without the polaron. This enables us to find high-order power series for the polaron mass in the regimes of weak and strong interaction. Comment: 4 pages, 1 figure
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2109.15028 Zobrazit plný text záznamu View this record from Arxiv