Equation of State in a Strongly Interacting Relativistic System
arXiv:1201.2203 · doi:10.1103/PhysRevC.86.035205
Abstract
We study the evolution of the equation of state of a strongly interacting quark system as a function of the diquark interaction strength. We show that for the system to avoid collapsing into a pressureless Boson gas at sufficiently strong diquark coupling strength, the diquark-diquark repulsion has to be self-consistently taken into account. In particular, we find that the tendency at zero temperature of the strongly interacting diquark gas to condense into the system ground state is compensated by the repulsion between diquarks if the diquark-diquark coupling constant is higher than a critical value . Considering such diquark-diquark repulsion, a positive pressure with no significant variation along the whole strongly interacting region is obtained. A consequence of the diquark-diquark repulsion is that the system maintains its BCS character in the whole strongly interacting region.
9 pages, 7 figs, To appear in Phys. Rev. C
References in corpus (29)
- Shapiro delay measurement of a two solar mass neutron star
- Equation of State of a Dense and Magnetized Fermion System
- New Critical Point Induced by the Axial Anomaly in Dense QCD
- The Massive Pulsar PSR J1614-2230: Linking Quantum Chromodynamics, Gamma-ray Bursts, and Gravitational Wave Astronomy
- Color-flavor locked superconductor in a magnetic field
- BEC-BCS Crossover in the Nambu--Jona-Lasinio Model of QCD
- Color-Superconducting Gap in the Presence of a Magnetic Field
- Color superconducting matter in a magnetic field
- Equation of state for the MCFL phase and its implications for compact star models
- Phase structure, collective modes, and the axial anomaly in dense QCD
- Magnetic Phases in Three-Flavor Color Superconductivity
- BCS/BEC crossover in Quark Matter and Evolution of its Static and Dynamic properties
- Cooper Pair's Magnetic Moment in MCFL Color Superconductivity
- Relativistic BCS-BEC crossover in a boson-fermion model
- Dense QCD in a Finite Volume
- Relativistic BCS-BEC Crossover at Zero Temperature
- 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
- Phase diagram of chiral quark matter: Fulde-Ferrell pairing from weak to strong coupling
- Role of two-flavor color superconductor pairing in a three-flavor Nambu--Jona-Lasinio model with axial anomaly
- Stable gapless superconductivity at strong coupling
- Baryon formation and dissociation in dense hadronic and quark matter
- Diquark Bose-Einstein Condensation and Nuclear Matter
- Spectral Continuity in Dense QCD
- 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
- Bose-Einstein condensation in dense quark matter
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- Bag vs. NJL models for color-flavor-locked strange quark matter
- BCS-BEC Crossover and Stability in a Nambu-Jona-Lasinio Model with Diquark-Diquark Repulsion
- Pairing fluctuation effects in a strongly coupled color superfluid/superconductor