Goldstone and Higgs Hydrodynamics in the BCS–BEC Crossover
AbstractWe discuss the derivation of a low-energy effective field theory of phase (Goldstone) and amplitude (Higgs) modes of the pairing field from a microscopic theory of attractive fermions. The coupled equations for Goldstone and Higgs fields are critically analyzed in the Bardeen–Cooper–Schrieffer (BCS)-to-Bose–Einstein condensate (BEC) crossover—both in three spatial dimensions and in two spatial dimensions. The crucial role of pair fluctuations is investigated, and the beyond-mean-field Gaussian theory of the BCS–BEC crossover is compared with available experimental data of the two-dimensional ultracold Fermi superfluid. View Full-Text
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Salasnich, L. Goldstone and Higgs Hydrodynamics in the BCS–BEC Crossover. Condens. Matter 2017, 2, 22.
Salasnich L. Goldstone and Higgs Hydrodynamics in the BCS–BEC Crossover. Condensed Matter. 2017; 2(2):22.Chicago/Turabian Style
Salasnich, Luca. 2017. "Goldstone and Higgs Hydrodynamics in the BCS–BEC Crossover." Condens. Matter 2, no. 2: 22.
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