Pion Superfluidity beyond Mean Field Approximation In Nambu--Jona-Lasinio Model
arXiv:0903.2364 · doi:10.1103/PhysRevD.79.094006
Abstract
We investigate pion superfluidity in the frame of two flavor Nambu--Jona-Lasinio model beyond mean field approximation. We calculate the thermodynamics to the next to leading order in an expansion in the inverse number of colors, including both quark and meson contributions at finite temperature and baryon and isospin density. Due to the meson fluctuations, the Sarma phase which exists at mean field level is washed away, and the Bose-Einstein condensation region at low isospin density is highly suppressed.
7 pages, 4 figures
References in corpus (20)
- QCD Phenomenology based on a Chiral Effective Lagrangian
- NJL-model analysis of dense quark matter
- Lattice QCD at finite isospin density at zero and finite temperature
- Pion Superfluidity and Meson Properties at Finite Isospin Density
- QCD at finite isospin density: from pion to quark-antiquark condensation
- The finite temperature transition for 2-flavour lattice QCD at finite isospin density
- Flavor-Mixing Effects on the QCD Phase Diagram at non-vanishing Isospin Chemical Potential: One or Two Phase Transitions?
- BEC-BCS Crossover in the Nambu--Jona-Lasinio Model of QCD
- Isospin Chemical Potential and the QCD Phase Diagram at Nonzero Temperature and Baryon Chemical Potential
- Quenched lattice QCD at finite isospin density and related theories
- BCS-BEC crossover at finite temperature in the broken-symmetry phase
- A calculation of the QCD phase diagram at finite temperature, and baryon and isospin chemical potentials
- Pion condensation in quark matter with finite baryon density
- Superfluidity in the interior-gap states
- Phase Structure of Nambu-Jona-Lasinio Model at Finite Isospin Density
- Pion Condensation in Baryonic Matter: from Sarma Phase to Larkin-Ovchinnikov-Fudde-Ferrell Phase
- Pion and kaon condensation in a 3-flavor NJL model
- Color superconductivity vs. pseudoscalar condensation in a three-flavor NJL model
- Breached Pairing Superfluidity at Finite Temperature and Density
- BCS-BEC Crossover and Thermodynamics in Asymmetric Nuclear Matter with Pairings in Isospin I=0 and I=1 Channels
Cited by in corpus (8)
- Equation of state in the PNJL model with the entanglement interaction
- Meson Screening Mass in a Strongly Coupled Pion Superfluid
- BCS-BEC crossover in relativistic Fermi systems
- Average phase factor in the PNJL model
- Structure of Compact Stars in Pion Superfluid Phase
- 3-dimensional QCD phase diagram with pion condensate in the NJL model
- Quark-antiquark Scattering Phase Shift and Meson Spectral Function in Pion Superfluid
- Meson Scattering in a Pion Superfluid