The BCS–BEC crossover: From ultra-cold Fermi gases to nuclear systems

GC Strinati, P Pieri, G Röpke, P Schuck, M Urban - Physics Reports, 2018 - Elsevier
This report addresses topics and questions of common interest in the fields of ultra-cold
gases and nuclear physics in the context of the BCS–BEC crossover. By this crossover, the …

Pseudogap phenomena in ultracold atomic Fermi gases

Q Chen, J Wang - Frontiers of Physics, 2014 - Springer
The pairing and superfluid phenomena in a two-component ultracold atomic Fermi gas is an
analogue of Cooper pairing and superconductivity in an electron system, in particular, the …

Stability of spin-orbit coupled Fermi gases with population imbalance

M Iskin, AL Subaşı - Physical review letters, 2011 - APS
We use the self-consistent mean-field theory to analyze the effects of Rashba-type spin-orbit
coupling (SOC) on the ground-state phase diagram of population-imbalanced Fermi gases …

Enhancement effect of mass imbalance on Fulde-Ferrell-Larkin-Ovchinnikov type of pairing in Fermi-Fermi mixtures of ultracold quantum gases

J Wang, Y Che, L Zhang, Q Chen - Scientific reports, 2017 - nature.com
Ultracold two-component Fermi gases with a tunable population imbalance have provided
an excellent opportunity for studying the exotic Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) …

Instability of Fulde-Ferrell-Larkin-Ovchinnikov states in atomic Fermi gases in three and two dimensions

J Wang, Y Che, L Zhang, Q Chen - Physical Review B, 2018 - APS
The exotic Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) states have been actively searched for
experimentally since the mean-field based FFLO theories were put forward half a century …

Ground states of atomic Fermi gases in a two-dimensional optical lattice with and without population imbalance

L Sun, Q Chen - Physical Review A, 2022 - APS
We study the ground-state phase diagram of population balanced and imbalanced ultracold
atomic Fermi gases with a short-range attractive interaction throughout the crossover from …

Relativistic BCS-BEC crossover in a boson-fermion model

J Deng, A Schmitt, Q Wang - Physical Review D—Particles, Fields, Gravitation …, 2007 - APS
We investigate the crossover from Bardeen-Cooper-Schrieffer (BCS) pairing to a Bose-
Einstein condensate (BEC) in a relativistic superfluid within a boson-fermion model. The …

Thermodynamics and superfluid density in BCS-BEC crossover with and without population imbalance

Y He, CC Chien, Q Chen, K Levin - Physical Review B—Condensed Matter …, 2007 - APS
We address the thermodynamics, density profiles, and superfluid density of trapped fermions
undergoing BCS-BEC crossover. We consider the case of zero and finite population …

Factorization and Criticality in Finite Systems of Arbitrary Spin

M Cerezo, R Rossignoli, N Canosa, E Ríos - Physical review letters, 2017 - APS
We analyze ground state (GS) factorization in general arrays of spins si with XXZ couplings
immersed in nonuniform fields. It is shown that an exceptionally degenerate set of …

The spin-imbalanced attractive Hubbard model in d= 3: Phase diagrams and BCS–BEC crossover at low filling

A Cichy, R Micnas - Annals of Physics, 2014 - Elsevier
We study the superconducting properties of the spin-imbalanced attractive Hubbard model
(AHM) in the presence of a Zeeman magnetic field, using the broken symmetry Hartree …