Non-Hermitian $p$-wave superfluid and effects of the inelastic three-body loss in a one-dimensional spin-polarized Fermi gas

Autor:	Tajima, Hiroyuki, Sekino, Yuta, Inotani, Daisuke, Dohi, Akira, Nagataki, Shigehiro, Hayata, Tomoya
Rok vydání:	2023
Předmět:	Condensed Matter - Quantum Gases Condensed Matter - Strongly Correlated Electrons Condensed Matter - Superconductivity Nuclear Theory Quantum Physics
Druh dokumentu:	Working Paper
Popis:	We theoretically investigate non-Hermitian $p$-wave Fermi superfluidity in one-dimensional spin-polarized Fermi gases which is relevant to recent ultracold atomic experiments. Considering an imaginary atom-dimer coupling responsible for the three-body recombination process in the Lindblad formalism, we discuss the stability of the superfluid state against the atomic loss effect. Within the two-channel non-Hermitian BCS-Leggett theory, the atomic loss is characterized by the product of the imaginary atom-dimer coupling and the $p$-wave effective range. Our results indicate that for a given imaginary atom-dimer coupling, a smaller magnitude of the effective ranges of $p$-wave interaction is crucial for reaching the non-Hermitian $p$-wave Fermi superfluid state. Comment: 9 pages, 3 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2312.15724 Zobrazit plný text záznamu View this record from Arxiv