Results 11 to 20 of about 5,965 (154)
Solution Theory of Ginzburg-Landau Theory on BCS-BEC Crossover
Advances in Mathematical Physics, 2014 We establish strong solution theory of time-dependent Ginzburg-Landau (TDGL) systems on BCS-BEC crossover. By the properties of Besov, Sobolev spaces, and Fourier functions and the method of bootstrapping argument, we deduce that the global existence of ...
Shuhong Chen, Zhong Tan
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Advances in Condensed Matter Physics, 2015 Recent experimental progress allows for exploring some important physical quantities of ultracold Fermi gases, such as the compressibility, spin susceptibility, viscosity, optical conductivity, and spin diffusivity. Theoretically, these quantities can be
Hao Guo, Yan He
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Communications Physics, 2023 The BCS-BEC (Bardeen-Cooper-Schrieffer–Bose-Einstein-condensate) crossover from strongly overlapping Cooper pairs to non-overlapping composite bosons in the strong coupling limit has been a long-standing issue of interacting many-body fermion systems ...
Yuta Mizukami +9 more
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Attractors of Modified Coupled Ginzburg–Landau Model
Mathematical Problems in Engineering, Volume 2023, Issue 1, 2023., 2023 Bose–Einstein condensation is a gaseous, superfluid state of matter exhibited by bosons as they cool to near absolute zero, which was discovered as early as 1924 but was not experimentally realized until 1995. In 2006, Machida and Koyama developed the corresponding Ginzburg–Landau model for superfluid and Bose–Einstein condensation‐spanning phenomena ...
Shuhong Chen, Shuai Liu, Rahman Mati ur
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Mott-Driven BEC-BCS Crossover in a Doped Spin Liquid Candidate κ-(BEDT-TTF)_{4}Hg_{2.89}Br_{8}
Physical Review X, 2022 The pairing of interacting fermions leading to superfluidity has two limiting regimes: the Bardeen-Cooper-Schrieffer (BCS) scheme for weakly interacting degenerate fermions and the Bose-Einstein condensation (BEC) of bosonic pairs of strongly interacting
Y. Suzuki +7 more
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Condensed Matter, 2021 Superfluidity has been predicted and now observed in a number of different electron-hole double-layer semiconductor heterostructures. In some of the heterostructures, such as GaAs and Ge-Si electron-hole double quantum wells, there is a strong mismatch ...
Sara Conti +3 more
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Rabi Coupled Fermions in the BCS–BEC Crossover
Condensed Matter, 2022 We investigate the three-dimensional BCS–BEC crossover in the presence of a Rabi coupling, which strongly affects several properties of the system, such as the chemical potential, the pairing gap and the superfluid density.
Luca Dell’Anna +2 more
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Universal correlations along the BEC-BCS crossover
New Journal of Physics, 2023 Universality of the long-distance behavior across the Bardeen–Cooper–Schrieffer (BEC)-Bose–Einstein condensate (BCS) smooth transition for two-body density correlation functions and the Cooper-pair probability density is demonstrated in a balanced ...
J C Obeso-Jureidini +4 more
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Hidden Pseudogap and Excitation Spectra in a Strongly Coupled Two-Band Superfluid/Superconductor
Condensed Matter, 2021 We investigate single-particle excitation properties in the normal state of a two-band superconductor or superfluid throughout the Bardeen–Cooper–Schrieffer (BCS) to Bose–Einstein-condensation (BEC) crossover, within the many-body T-matrix approximation ...
Hiroyuki Tajima +2 more
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Probing the BCS-BEC crossover with persistent currents
Physical Review Research, 2021 We study the persistent currents of an attractive Fermi gas confined in a tightly confining ring trap and subjected to an artificial gauge field all through the BCS-BEC crossover. At weak attractions, on the Bardeen-Cooper-Schrieffer (BCS) side, fermions
Giovanni Pecci +3 more
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