BCS–BEC Crossover of Triplet Exciton Condensation in Bilayer Systems [PDF]
Proceedings of the 29th International Conference on Low Temperature Physics (LT29), 2022 We study the BCS-BEC crossover phenomenon of triplet exciton condensation using a half-filled bilayer Hubbard model. We calculate the dynamical spin structure factor and the exciton wave function on the phase boundary between the antiferromagnetically ...
H. Suwa, Shang-Shun Zhang, C. Batista
semanticscholar +1 more source
Exactly Solvable Model of the BCS-BEC Crossover [PDF]
Physical Review Letters, 2004 We discuss an integrable model of interacting Fermions in one dimension, that allows an exact description of the crossover from a BCS- to a Bose-like superfluid. This model bridges the Gaudin-Yang model of attractive spin 1/2 Fermions to the Lieb-Liniger model of repulsive Bosons.
J.N. FUCHS, RECATI A, W. ZWERGER
openaire +5 more sources
Non-Hermitian BCS-BEC crossover of Dirac fermions
Journal of High Energy Physics, 2021 We investigate chiral symmetry breaking in a model of Dirac fermions with a complexified coupling constant whose imaginary part represents dissipation.
Takuya Kanazawa
doaj +1 more source
BEC-BCS Crossover in the Nambu--Jona-Lasinio Model of QCD [PDF]
, 2007 The BEC-BCS crossover in QCD at finite baryon and isospin chemical potentials is investigated in the Nambu--Jona-Lasinio model. The diquark condensation in two color QCD and the pion condensation in real QCD would undergo a BEC-BCS crossover when the ...
A. J. Leggett +7 more
core +2 more sources
Particle-hole fluctuations in BCS-BEC crossover [PDF]
Physical Review B, 2008 11 pages, 6 figures.
Floerchinger, S. +3 more
openaire +2 more sources
BCS–BEC crossover in a quasi-two-dimensional Fermi superfluid
New Journal of Physics, 2023 We study the crossover from the Bardeen–Cooper–Shrieffer regime to the Bose–Einstein-condensation regime in an anisotropic trapped quantum gas of ultracold fermionic atoms.
Jing Zhou +4 more
doaj +1 more source
Entanglement between pairing and screening in the Gorkov-Melik-Barkhudarov correction to the critical temperature throughout the BCS-BEC crossover [PDF]
, 2017 The theoretical description of the critical temperature Tc of a Fermi superfluid dates back to the work by Gor'kov and Melik-Barkhudarov (GMB), who addressed it for a weakly-coupled (dilute) superfluid in the BCS (weak-coupling) limit of the BCS-BEC ...
Perali, A. +3 more
core +2 more sources
Simulating Artificial 1D Physics with Ultra‐Cold Fermionic Atoms: Three Exemplary Themes
Advanced Quantum Technologies, Volume 3, Issue 6, June 2020., 2020 Ultra‐cold atomic systems are an excellent arena for simulating quantum many‐body phenomena. The current experimental progress in exploration of 1D ultra‐cold fermionic systems is reviewed from the perspective of three subjectively selected trends of high experimental interest: unconventional pairing in attractively interacting mixtures, systems ...
Jacek Dobrzyniecki, Tomasz Sowiński
wiley +1 more source
Pairs, trimers, and BCS-BEC crossover near a flat band: Sawtooth lattice [PDF]
Physical review B, 2021 We investigate pairing and superconductivity in the attractive Fermi Hubbard model on the one-dimensional sawtooth lattice, which exhibits a flat band by fine-tuning the hopping rates.
G. Orso, Manpreet Singh
semanticscholar +1 more source
Sweeping across the BCS-BEC crossover, reentrant, and hidden quantum phase transitions in two-band superconductors by tuning the valence and conduction bands [PDF]
Physical review B, 2023 Two-band electronic structures with a valence and a conduction band separated by a tunable energy gap and with pairing of electrons in different channels can be relevant to investigate the properties of two-dimensional multiband superconductors and ...
Giovanni Midei, A. Perali
semanticscholar +1 more source