Topological phase transitions driven by non-Abelian gauge potentials in optical square lattices

Research output: Contribution to journal › Journal article › Research › peer-review

Standard

Topological phase transitions driven by non-Abelian gauge potentials in optical square lattices. / Burrello, M.; Fulga, I. C.; Alba, E.; Lepori, L.; Trombettoni, A.

In: Physical Review A, Vol. 88, No. 5, 01.11.2013, p. 53619.

Research output: Contribution to journal › Journal article › Research › peer-review

Harvard

Burrello, M, Fulga, IC, Alba, E, Lepori, L & Trombettoni, A 2013, 'Topological phase transitions driven by non-Abelian gauge potentials in optical square lattices', Physical Review A, vol. 88, no. 5, pp. 53619. https://doi.org/10.1103/PhysRevA.88.053619

APA

Burrello, M., Fulga, I. C., Alba, E., Lepori, L., & Trombettoni, A. (2013). Topological phase transitions driven by non-Abelian gauge potentials in optical square lattices. Physical Review A, 88(5), 53619. https://doi.org/10.1103/PhysRevA.88.053619

Vancouver

Burrello M, Fulga IC, Alba E, Lepori L, Trombettoni A. Topological phase transitions driven by non-Abelian gauge potentials in optical square lattices. Physical Review A. 2013 Nov 1;88(5):53619. https://doi.org/10.1103/PhysRevA.88.053619

Author

Burrello, M. ; Fulga, I. C. ; Alba, E. ; Lepori, L. ; Trombettoni, A. / Topological phase transitions driven by non-Abelian gauge potentials in optical square lattices. In: Physical Review A. 2013 ; Vol. 88, No. 5. pp. 53619.

Bibtex

@article{035fb5ac7f4d48a9bf2bc2eba8189f4e,
title = "Topological phase transitions driven by non-Abelian gauge potentials in optical square lattices",
abstract = "We analyze a tight-binding model of ultracold fermions loaded in an optical square lattice and subjected to a synthetic non-Abelian gauge potential featuring both a magnetic field and a translationally invariant SU(2) term. We consider in particular the effect of broken time-reversal symmetry and its role in driving nontrivial topological phase transitions. By varying the spin-orbit coupling parameters, we find both a semimetal-insulator phase transition and a topological phase transition between insulating phases with different numbers of edge states. The spin is not a conserved quantity of the system, and the topological phase transitions can be detected by analyzing its polarization in time-of-flight images, providing a clear diagnostic for the characterization of the topological phases through the partial entanglement between spin and lattice degrees of freedom.",
keywords = "Degenerate Fermi gases, Quantum phase transitions, Phases: geometric, dynamic or topological",
author = "M. Burrello and Fulga, {I. C.} and E. Alba and L. Lepori and A. Trombettoni",
year = "2013",
month = nov,
day = "1",
doi = "10.1103/PhysRevA.88.053619",
language = "English",
volume = "88",
pages = "53619",
journal = "Physical Review A - Atomic, Molecular, and Optical Physics",
issn = "1050-2947",
publisher = "American Physical Society",
number = "5",

}

RIS

TY - JOUR

T1 - Topological phase transitions driven by non-Abelian gauge potentials in optical square lattices

AU - Burrello, M.

AU - Fulga, I. C.

AU - Alba, E.

AU - Lepori, L.

AU - Trombettoni, A.

PY - 2013/11/1

Y1 - 2013/11/1

N2 - We analyze a tight-binding model of ultracold fermions loaded in an optical square lattice and subjected to a synthetic non-Abelian gauge potential featuring both a magnetic field and a translationally invariant SU(2) term. We consider in particular the effect of broken time-reversal symmetry and its role in driving nontrivial topological phase transitions. By varying the spin-orbit coupling parameters, we find both a semimetal-insulator phase transition and a topological phase transition between insulating phases with different numbers of edge states. The spin is not a conserved quantity of the system, and the topological phase transitions can be detected by analyzing its polarization in time-of-flight images, providing a clear diagnostic for the characterization of the topological phases through the partial entanglement between spin and lattice degrees of freedom.

AB - We analyze a tight-binding model of ultracold fermions loaded in an optical square lattice and subjected to a synthetic non-Abelian gauge potential featuring both a magnetic field and a translationally invariant SU(2) term. We consider in particular the effect of broken time-reversal symmetry and its role in driving nontrivial topological phase transitions. By varying the spin-orbit coupling parameters, we find both a semimetal-insulator phase transition and a topological phase transition between insulating phases with different numbers of edge states. The spin is not a conserved quantity of the system, and the topological phase transitions can be detected by analyzing its polarization in time-of-flight images, providing a clear diagnostic for the characterization of the topological phases through the partial entanglement between spin and lattice degrees of freedom.

KW - Degenerate Fermi gases

KW - Quantum phase transitions

KW - Phases: geometric

KW - dynamic or topological

U2 - 10.1103/PhysRevA.88.053619

DO - 10.1103/PhysRevA.88.053619

M3 - Journal article

VL - 88

SP - 53619

JO - Physical Review A - Atomic, Molecular, and Optical Physics

JF - Physical Review A - Atomic, Molecular, and Optical Physics

SN - 1050-2947

IS - 5

ER -

ID: 184607361