Pairing and the spin susceptibility of the polarized unitary Fermi gas in the normal phase

Autor:	Rammelmüller, Lukas, Hou, Yaqi, Drut, Joaquín E., Braun, Jens
Rok vydání:	2021
Předmět:	Condensed Matter - Quantum Gases High Energy Physics - Lattice Nuclear Theory
Zdroj:	Phys. Rev. A 103, 043330 (2021)
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevA.103.043330
Popis:	We theoretically study the pairing behavior of the unitary Fermi gas in the normal phase. Our analysis is based on the static spin susceptibility, which characterizes the response to an external magnetic field. We obtain this quantity by means of the complex Langevin approach and compare our calculations to available literature data in the spin-balanced case. Furthermore, we present results for polarized systems, where we complement and expand our analysis at high temperature with high-order virial expansion results. The implications of our findings for the phase diagram of the spin-polarized unitary Fermi gas are discussed, in the context of the state of the art. Comment: 8 pages, 3 figures (published version)
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2102.05911 Zobrazit plný text záznamu View this record from Arxiv