Spin-depairing transition of attractive Fermi gases on a ring driven by synthetic gauge fields

Shun Uchino, Norio Kawakami

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Motivated by the recent experimental realization of synthetic gauge fields in ultracold atoms, we investigate one-dimensional attractive Fermi gases with a time-dependent gauge flux on the spin sector. By combining the methods of the Bethe ansatz with complex twists and Landau-Dykhne, it is shown that a spin-depairing transition occurs, which may represent a nonequilibrium transition from fermionic superfluids to normal states with spin currents caused by a many-body quantum tunneling. For the case of the Hubbard ring at half filling, our finding forms a dual concept with the dielectric breakdown of the Mott insulator discussed in. We analyze cases of arbitrary filling and continuum model, and show how filling affects the transition probability.

Original languageEnglish
Article number013610
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Volume85
Issue number1
DOIs
Publication statusPublished - 2012 Jan 5
Externally publishedYes

Fingerprint

rings
gases
transition probabilities
sectors
breakdown
insulators
continuums
atoms

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

Spin-depairing transition of attractive Fermi gases on a ring driven by synthetic gauge fields. / Uchino, Shun; Kawakami, Norio.

In: Physical Review A - Atomic, Molecular, and Optical Physics, Vol. 85, No. 1, 013610, 05.01.2012.

Research output: Contribution to journalArticle

@article{1e31502c82e94b788843aa33844b08f2,
title = "Spin-depairing transition of attractive Fermi gases on a ring driven by synthetic gauge fields",
abstract = "Motivated by the recent experimental realization of synthetic gauge fields in ultracold atoms, we investigate one-dimensional attractive Fermi gases with a time-dependent gauge flux on the spin sector. By combining the methods of the Bethe ansatz with complex twists and Landau-Dykhne, it is shown that a spin-depairing transition occurs, which may represent a nonequilibrium transition from fermionic superfluids to normal states with spin currents caused by a many-body quantum tunneling. For the case of the Hubbard ring at half filling, our finding forms a dual concept with the dielectric breakdown of the Mott insulator discussed in. We analyze cases of arbitrary filling and continuum model, and show how filling affects the transition probability.",
author = "Shun Uchino and Norio Kawakami",
year = "2012",
month = "1",
day = "5",
doi = "10.1103/PhysRevA.85.013610",
language = "English",
volume = "85",
journal = "Physical Review A",
issn = "2469-9926",
publisher = "American Physical Society",
number = "1",

}

TY - JOUR

T1 - Spin-depairing transition of attractive Fermi gases on a ring driven by synthetic gauge fields

AU - Uchino, Shun

AU - Kawakami, Norio

PY - 2012/1/5

Y1 - 2012/1/5

N2 - Motivated by the recent experimental realization of synthetic gauge fields in ultracold atoms, we investigate one-dimensional attractive Fermi gases with a time-dependent gauge flux on the spin sector. By combining the methods of the Bethe ansatz with complex twists and Landau-Dykhne, it is shown that a spin-depairing transition occurs, which may represent a nonequilibrium transition from fermionic superfluids to normal states with spin currents caused by a many-body quantum tunneling. For the case of the Hubbard ring at half filling, our finding forms a dual concept with the dielectric breakdown of the Mott insulator discussed in. We analyze cases of arbitrary filling and continuum model, and show how filling affects the transition probability.

AB - Motivated by the recent experimental realization of synthetic gauge fields in ultracold atoms, we investigate one-dimensional attractive Fermi gases with a time-dependent gauge flux on the spin sector. By combining the methods of the Bethe ansatz with complex twists and Landau-Dykhne, it is shown that a spin-depairing transition occurs, which may represent a nonequilibrium transition from fermionic superfluids to normal states with spin currents caused by a many-body quantum tunneling. For the case of the Hubbard ring at half filling, our finding forms a dual concept with the dielectric breakdown of the Mott insulator discussed in. We analyze cases of arbitrary filling and continuum model, and show how filling affects the transition probability.

UR - http://www.scopus.com/inward/record.url?scp=84855510140&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84855510140&partnerID=8YFLogxK

U2 - 10.1103/PhysRevA.85.013610

DO - 10.1103/PhysRevA.85.013610

M3 - Article

AN - SCOPUS:84855510140

VL - 85

JO - Physical Review A

JF - Physical Review A

SN - 2469-9926

IS - 1

M1 - 013610

ER -