Nonlocality effects on Color Spin Locking condensates
arXiv:hep-ph/0604196 · doi:10.1103/PhysRevD.74.114005
Abstract
We consider the color spin locking (CSL) phase of two-flavor quark matter at zero temperature for nonlocal instantaneous, separable interactions. We employ a Lorentzian-type form factor allowing a parametric interpolation between the sharp (Nambu-Jona-Lasinio (NJL) model) and very smooth (e.g. Gaussian) cut-off models for systematic studies of the influence on the CSL condensate the deviation from the NJL model entails. This smoothing of the NJL model form factor shows advantageous features for the phenomenology of compact stars: (i) a lowering of the critical chemical potential for the onset of the chiral phase transition as a prerequisite for stability of hybrid stars with extended quark matter cores and (ii) a reduction of the smallest pairing gap to the order of 100 keV, being in the range of values interesting for phenomenological studies of hybrid star cooling evolution.
8 pages, 8 figures, 1 table, accepted for publication in Phys.Rev.D
References in corpus (23)
- NJL-model analysis of dense quark matter
- Inhomogeneous Superconductivity in Condensed Matter and QCD
- The phase diagram of neutral quark matter: Self-consistent treatment of quark masses
- High Density QCD and Instantons
- The phase diagram of three-flavor quark matter under compact star constraints
- Quark Hadron Continuity in QCD with one Flavor
- Scaling behavior of quark propagator in full QCD
- Cooling of Neutron Stars with Color Superconducting Quark Cores
- Extensive study of phase diagram for charge neutral homogeneous quark matter affected by dynamical chiral condensation -- unified picture for thermal unpairing transitions from weak to strong coupling --
- Single color and single flavor color superconductivity
- Thermodynamic properties of a simple, confining model
- The ground state in a spin-one color superconductor
- Nonstrange hybrid compact stars with color superconducting matter
- Cooling of Hybrid Neutron Stars and Hypothetical Self-bound Objects with Superconducting Quark Cores
- Color-spin locking phase in two-flavor quark matter for compact star phenomenology
- Phase diagram of neutral quark matter in nonlocal chiral quark models
- Neutrino emission and cooling rates of spin-one color superconductors
- Hybrid stars with color superconductivity within a nonlocal chiral quark model
- Direct Urca neutrino rate in colour superconducting quark matter
- How robust is a 2SC quark matter phase under compact star constraints?
- Cooling of Neutron Stars with Color Superconducting Quark Cores
- Two flavor color superconductivity in nonlocal chiral quark models
- Exploring the QCD phase diagram with compact stars
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- Sequential deconfinement of quark flavors in neutron stars
- Influence of the stiffness of the equation of state and in-medium effects on the cooling of compact stars
- Color-spin locking in a self-consistent Dyson-Schwinger approach
- Unmasking neutron star interiors using cooling simulations
- Effects of Hadron-Quark Phase Transitions in Hybrid Stars within the NJL Model
- Probing the QCD vacuum with an abelian chromomagnetic field: A study within an effective model
- Helical ordering in the ground state of spin-one color superconductors as a consequence of parity violation
- Neutrino emissivities and bulk viscosity in neutral two-flavor quark matter
- Asymptotically conformal CFL quark matter within a nonlocal chiral quark model
- Spin-one color superconductivity in compact stars?- an analysis within NJL-type models
- Spin-one color superconductors: collective modes and effective Lagrangian
- Neutrino radiation from dense matter
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