Nonlocal quantum fluctuations and fermionic superfluidity in the imbalanced attractive hubbard model

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Volume Title
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Date
2014-10-30
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Mcode
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Language
en
Pages
5
1-5
Series
PHYSICAL REVIEW LETTERS, Volume 113, issue 18
Abstract
We study fermionic superfluidity in strongly anisotropic optical lattices with attractive interactions utilizing the cluster dynamical mean-field theory method, and focusing in particular on the role of nonlocal quantum fluctuations. We show that nonlocal quantum fluctuations impact the BCS superfluid transition dramatically. Moreover, we show that exotic superfluid states with a delicate order parameter structure, such as the Fulde-Ferrell-Larkin-Ovchinnikov phase driven by spin population imbalance, can emerge even in the presence of such strong fluctuations.
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Physics and Astronomy(all)
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Citation
Heikkinen , M O J , Kim , D H , Troyer , M & Törmä , P 2014 , ' Nonlocal quantum fluctuations and fermionic superfluidity in the imbalanced attractive hubbard model ' PHYSICAL REVIEW LETTERS , vol 113 , no. 18 , 185301 , pp. 1-5 . DOI: 10.1103/PhysRevLett.113.185301