Transport coefficients of two-flavor superconducting quark matter
arXiv:1408.4999 · doi:10.1103/PhysRevC.90.055205
Abstract
Background: The two-flavor color superconducting (2SC) phase of quark matter is a possible constituent of the core of neutron stars. To assess its impact on the observable behavior of the star one must analyze transport properties, which in 2SC matter are controlled by the scattering of gapless fermionic modes by each other and possibly also by color-magnetic flux tubes. Purpose: We determine the electrical and thermal conductivities and the shear viscosity of 2SC matter. Methods: We use a variational formulation of transport theory, treating the strong and electromagnetic interactions via a weak coupling expansion. Results: We provide the leading order scaling of the transport coefficients with temperature and chemical potential as well as accurate fits to our numerical results. We also find that the scattering of fermions by color-magnetic flux tubes is insignificant for thermal conductivity, but may contribute to the electrical conductivity and shear viscosity in the limit of very low temperature or high magnetic field. We also estimate the transport coefficients in unpaired quark matter. Conclusions: Our calculation has set the stage for exploration of possible signatures of the presence of 2SC quark matter in neutron stars.
arXiv comment19 pages, 3 figures
References in corpus (25)
- Color superconductivity in dense quark matter
- QCD at Finite Baryon Density: Nucleon Droplets and Color Superconductivity
- Color-Flavor Locking and Chiral Symmetry Breaking in High Density QCD
- The Quark-Gluon Plasma in Equilibrium
- Enforced Electrical Neutrality of the Color-Flavor Locked Phase
- Gravitational radiation limit on the spin of young neutron stars
- Gapless two-flavor color superconductor
- Magnetic fields within color superconducting neutron star cores
- Shear viscosity in neutron star cores
- Shear viscosity of a superfluid Fermi gas in the unitarity limit
- Debye screening and Meissner effect in a two-flavor color superconductor
- Shear viscosity of a hadronic gas mixture
- Photons in gapless color-flavor-locked quark matter
- Asymptotic deconfinement in high-density QCD
- Thermal conductivity of dense quark matter and cooling of stars
- Shear Viscosity in a CFL Quark Star
- Electron-muon heat conduction in neutron star cores via the exchange of transverse plasmons
- Viscous damping of r-modes: Small amplitude instability
- Bulk viscosity in a cold CFL superfluid
- Mixing and Screening of Photons and Gluons in a Color Superconductor
- Color-magnetic flux tubes in quark matter cores of neutron stars
- Longitudinal gluons and Nambu-Goldstone bosons in a two-flavor color superconductor
- Gluon self-energy in a two-flavor color superconductor
- Shear viscosity from kaon condensation in color-flavor-locked quark matter
- Leptonic contribution to the bulk viscosity of nuclear matter
Cited by in corpus (24)
- Electrical Conductivity of Quark-Gluon Plasma in Strong Magnetic Fields
- Reaction rates and transport in neutron stars
- Electrical conductivity of a warm neutron star crust in magnetic fields
- Anisotropic electrical conductivity of magnetized hot quark matter
- Transport coefficients of two-flavor quark matter from the Kubo formalism
- Impact of magnetic field on shear viscosity of quark matter in Nambu-Jona-Lasinio model
- Continuity from neutron matter to two-flavor quark matter with and superfluidity
- Medium effects on the electrical and Hall conductivities of a hot and magnetized pion gas
- Cooling compact stars and phase transitions in dense QCD
- The Shear Viscosity in an Anisotropic Unitary Fermi Gas
- Effect of time-varying electromagnetic field on Wiedemann-Franz law in a hot hadronic matter
- Transport coefficients of leptons in superconducting neutron star cores
- Effect of temperature and magnetic field on two-flavor superconducting quark matter
- Quantum version of transport coefficients in Nambu--Jona-Lasinio model at finite temperature and strong magnetic field
- Impact of different extended components of mean field models on transport coefficients of quark matter and their causal aspects
- The shear viscosity of two-flavor crystalline color superconducting quark matter
- Neutrino emissivities and bulk viscosity in neutral two-flavor quark matter
- Shear viscosity coefficient of magnetized QCD medium near chiral phase transition
- Color superconductivity from the chiral quark-meson model
- Exploring phases of dense QCD with compact stars
- Diffusion in superfluid Fermi mixtures: General formalism
- Electrical conductivity and shear viscosity of a pion gas in a thermo-magnetic medium
- Possibility of quantum Hall effect in dense quark matter environments: A chiral model approach
- Pair luminosity and cooling of newborn strange star: unpaired quarks