Relativistic BCS-BEC crossover in a boson-fermion model
arXiv:nucl-th/0611097 · doi:10.1103/PhysRevD.76.034013
Abstract
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 model includes, besides the fermions, separate bosonic degrees of freedom, accounting for the bosonic nature of the Cooper pairs. The crossover is realized by tuning the difference between the boson mass and boson chemical potential as a free parameter. The model yields populations of condensed and uncondensed bosons as well as gapped and ungapped fermions throughout the crossover region for arbitrary temperatures. Moreover, we observe the appearance of antiparticles for sufficiently large values of the crossover parameter. As an application, we study pairing of fermions with imbalanced populations. The model can potentially be applied to color superconductivity in dense quark matter at strong couplings.
ReVTex4, 19 pages, 10 figures; new chapter added about the case of imbalanced fermion populations; minor modifications to main part; references added
References in corpus (59)
- Observation of resonance condensation of fermionic atom pairs
- NJL-model analysis of dense quark matter
- Condensation of Pairs of Fermionic Atoms Near a Feshbach Resonance
- Pairing and Phase Separation in a Polarized Fermi Gas
- Fermionic Superfluidity with Imbalanced Spin Populations and the Quantum Phase Transition to the Normal State
- Experimental Study of the BEC-BCS Crossover Region in Lithium 6
- BCS-BEC Crossover: From High Temperature Superconductors to Ultracold Superfluids
- Evidence for Superfluidity in a Resonantly Interacting Fermi Gas
- Crossover from a molecular Bose-Einstein condensate to a degenerate Fermi gas
- QCD at finite isospin density
- Superconductivity by long-range color magnetic interaction in high-density quark matter
- Resonance superfluidity in a quantum degenerate Fermi gas
- The Quark-Gluon Plasma in Equilibrium
- The BCS-BEC Crossover in a Gas of Fermi Atoms with a Feshbach Resonance
- Prospect of creating a composite fermi/bose superfluid
- Asymmetric Two-component Fermion Systems in Strong Coupling
- The phase diagram of neutral quark matter: Self-consistent treatment of quark masses
- Quantum Monte Carlo Studies of Superfluid Fermi Gases
- Pion Superfluidity and Meson Properties at Finite Isospin Density
- Color superconductivity in weak coupling
- QCD at finite isospin density: from pion to quark-antiquark condensation
- Epsilon expansion for a Fermi gas at infinite scattering length
- Two lectures on color superconductivity
- Schwinger-Dyson Approach to Color Superconductivity in Dense QCD
- Superfluid stability in BEC-BCS crossover
- On the Perturbative Nature of Color Superconductivity
- BEC-BCS Crossover in the Nambu--Jona-Lasinio Model of QCD
- Chromomagnetic instability in dense quark matter
- Phase diagram of a cold polarized Fermi gas
- Breached pairing superfluidity: Possible realization in QCD
- Meissner masses in the gCFL phase of QCD
- Color Superconductivity at Moderate Baryon Density
- Signatures of resonance superfluidity in a quantum Fermi gas
- Photons in gapless color-flavor-locked quark matter
- When the Transition Temperature in Color Superconductors is Not Like in BCS Theory
- BCS-BEC crossover in a relativistic superfluid and its significance to quark matter
- How the quark self-energy affects the color-superconducting gap
- Dense Quark Matter in Nature
- Color-superconductivity in the strong-coupling regime of Landau gauge QCD
- Novel Phases at High Density and their Roles in the Structure and Evolution of Neutron Stars
- Stability conditions and Fermi surface topologies in a superconductor
- Anomalous specific heat in high-density QED and QCD
- Stability conditions and phase diagrams for two component Fermi gases with population imbalance
- Relativistic BCS-BEC Crossover at Zero Temperature
- Evaluating the phase diagram of superconductors with asymmetric spin populations
- Fermionic dispersion relations in ultradegenerate relativistic plasmas beyond leading logarithmic order
- Pre-critical Phenomena of Two-flavor Color Superconductivity in Heated Quark Matter -- diquark-pair fluctuations and non-Fermi liquid behavior --
- Stressed pairing in conventional color superconductors is unavoidable
- Stable gapless superconductivity at strong coupling
- Diquark Bose-Einstein Condensation and Nuclear Matter
- Comment on "Superfluid stability in the BEC-BCS crossover"
- Absence of the London limit for the first-order phase transition to a color superconductor
- Diquark Bose-Einstein condensation
- Non-Fermi Liquid Behavior Induced by Resonant Diquark-pair Scattering in Heated Quark Matter
- A General Effective Action for High-Density Quark Matter
- Thermodynamics and tunneling spectroscopy in the pseudogap regime of the boson fermion model
- Recent developments in weak-coupling color superconductivity
- The Complex Gap in Color Superconductivity
- The imaginary part of the gap function in color superconductivity
Cited by in corpus (37)
- Bose-Einstein Condensate general relativistic stars
- The NJL model of dense three-flavor matter with axial anomaly: the low temperature critical point and BEC-BCS diquark crossover
- Reaction rates and transport in neutron stars
- Three-flavor Nambu--Jona-Lasinio model at finite isospin chemical potential
- Singular values of the Dirac operator in dense QCD-like theories
- Bound diquarks and their Bose-Einstein condensation in strongly coupled quark matter
- Relativistic BCS-BEC Crossover at Finite Temperature and Its Application to Color Superconductivity
- BCS-BEC crossover in dense relativistic matter: Collective excitations
- Bose-Einstein condensate strings
- Phase diagram of chiral quark matter: Fulde-Ferrell pairing from weak to strong coupling
- Dynamic density and spin responses of a superfluid Fermi gas in the BCS-BEC crossover: Path integral formulation and pair fluctuation theory
- Thin accretion disks around cold Bose-Einstein Condensate stars
- Instabilities in relativistic two-component (super)fluids
- Baryon formation and dissociation in dense hadronic and quark matter
- Strongly interacting Fermi systems in 1/N expansion: From cold atoms to color superconductivity
- (Inverse) Magnetic Catalysis in Bose-Einstein Condensation of Neutral Bound Pairs
- BCS-BEC crossover in relativistic Fermi systems
- BCS BEC crossover and phase structure of relativistic system: a variational approach
- BCS-BEC crossover in a relativistic boson-fermion model beyond mean field approximation
- Magnetic Tuning of the Relativistic BCS-BEC Crossover
- Pionic BEC--BCS crossover at finite isospin chemical potential
- Bose-Einstein Condensation of Bound Pairs of Relativistic Fermions in a Magnetic Field
- Emergent vortex-electron interaction from dualization
- Bound States and Superconductivity in Dense Fermi Systems
- Relativistic BCS-BEC crossover of a two-species Fermi gas with number density asymmetry at zero temperature
- Equation of State in a Strongly Interacting Relativistic System
- BCS-BEC Crossover and Stability in a Nambu-Jona-Lasinio Model with Diquark-Diquark Repulsion
- Gauge Invariant Linear Response Theory of Relativistic BCS superfluids
- Fermion condensate from torsion in the reheating era after inflation
- Bose-Einstein condensation in strong-coupling quark color superconductor near flavor SU(3) limit
- Spin gauge theory, duality and fermion pairing
- Renormalizing the Quark-Meson-Diquark Model
- Pairing fluctuation effects in a strongly coupled color superfluid/superconductor
- Some recent progress on quark pairings in dense quark and nuclear matter
- Multicomponent Superfluids and Superconductors in Dense Nuclear and Quark Matter
- Possible crossover from BCS superconductivity to Bose-Einstein condensate in quark matter
- Fermion-Vortex Interactions in Axion Electrodynamics