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Related papers: Transport coefficients of two-flavor superconducti…

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We argue that if color-superconducting quark matter exists in the core of a neutron star, it may contain a high density of flux tubes, carrying flux that is mostly color-magnetic, with a small admixture of ordinary magnetic flux. We focus…

Solar and Stellar Astrophysics · Physics 2014-11-20 Mark G. Alford , Armen Sedrakian

We present the first calculation of the shear viscosity for two-flavor plane wave (FF) color superconducting quark matter. This is a member of the family of crystalline color superconducting phases of dense quark matter that may be present…

High Energy Physics - Phenomenology · Physics 2017-12-06 Sreemoyee Sarkar , Rishi Sharma

Transport coefficients of dense quark matter are needed to study properties of compact stars. They can tell us about the cooling, vibrational and rotational properties of the star. We report below a computation of the shear viscosity in the…

High Energy Physics - Phenomenology · Physics 2017-08-23 Cristina Manuel

In this work, we have calculated the transport coefficients: shear viscosity and thermal conductivity inside the neutron star core. Our calculation is based on the relativistic kinetic theory approach using a modified BUU equation for…

Nuclear Theory · Physics 2026-03-20 Utsab Gangopadhyaya , Suman Pal , Gargi Chaudhuri

The transport properties of neutron star matter play an important role in many astrophysical processes. We report the results of a calculation of the shear viscosity and thermal conductivity coefficients of the hard-sphere fermion system of…

Nuclear Theory · Physics 2016-03-23 Angela Mecca , Alessandro Lovato , Omar Benhar , Artur Polls

We study thermodynamic and transport properties for the isotropic color-spin-locking (iso-CSL) phase of two-flavor superconducting quark matter under compact star constraints within a NJL-type chiral quark model. Chiral symmetry breaking…

High Energy Astrophysical Phenomena · Physics 2016-12-28 J. Berdermann , D. Blaschke , T. Fischer , A. Kachanovich

The transport coefficients of quark matter at non-zero chemical potential and temperature are computed within the two-flavor Nambu--Jona-Lasinio model. We apply the Kubo formalism to obtain the thermal ($\kappa$) and electrical ($\sigma$)…

Nuclear Theory · Physics 2020-06-30 Arus Harutyunyan , Dirk H. Rischke , Armen Sedrakian

The color neutral two-flavor superconducting (2SC) phase of cold and dense quark matter is studied in the presence of constant magnetic fields and at moderate baryon densities. In the first part of the paper, a two-flavor effective…

High Energy Physics - Phenomenology · Physics 2011-08-17 Sh. Fayazbakhsh , N. Sadooghi

We review the calculations of the kinetic coefficients (thermal conductivity, shear viscosity, momentum transfer rates) of the neutron star core matter within the framework of the Landau Fermi-liquid theory. We restrict ourselves to the…

Nuclear Theory · Physics 2022-03-23 Peter Shternin , Dmitry Ofengeim

We consider transport properties of the hypernuclear matter in neutron star cores. In particular, we calculate the thermal conductivity, the shear viscosity, and the momentum transfer rates for np$\Sigma^{-}\Lambda e\mu$ composition of…

High Energy Astrophysical Phenomena · Physics 2021-06-24 Peter Shternin , Isaac Vidaña

Motivated by the possible presence of deconfined quark matter in neutron stars and their mergers and the important role of transport phenomena in these systems, we perform the first-ever systematic study of different viscosities and…

High Energy Physics - Theory · Physics 2021-01-04 Carlos Hoyos , Niko Jokela , Matti Jarvinen , Javier G. Subils , Javier Tarrio , Aleksi Vuorinen

This work investigates the bulk viscosity of warm, dense, neutrino-transparent, color-superconducting quark matter, where damping of density oscillations in the kHz frequency range arises from weak-interaction-driven direct Urca processes…

Nuclear Theory · Physics 2025-09-15 Mark Alford , Arus Harutyunyan , Armen Sedrakian , Stefanos Tsiopelas

We show that within a recently developed nonlocal, chiral quark model the critical densities for a phase transition to color superconducting quark matter under neutron star conditions can be low enough that these phases occur in compact…

Astrophysics · Physics 2017-08-23 D. Blaschke , D. N. Voskresensky , H. Grigorian

We present a numerical study of shear viscosity and thermal conductivity of symmetric nuclear matter, pure neutron matter and $\beta$-stable nuclear matter, in the framework of the Brueckner theory. The calculation of in-medium cross…

Solar and Stellar Astrophysics · Physics 2014-11-21 H. F. Zhang , U. Lombardo , W. Zuo

Color superconductivity in quark matter is studied for electrically charge neutral neutron star matter in $\beta$-equilibrium. Both bulk quark matter and mixed phases of quark and nuclear matter are treated. The electron chemical potential…

High Energy Physics - Phenomenology · Physics 2007-05-23 H. Heiselberg

We study the shear and bulk viscosity coefficients as well as the thermal conductivity as arising from the collisions among phonons in superfluid neutron stars. We use effective field theory techniques to extract the allowed phonon…

Solar and Stellar Astrophysics · Physics 2014-12-01 Laura Tolos , Cristina Manuel , Sreemoyee Sarkar , Jaume Tarrus

We calculate the transport coefficients like shear viscosity and electrical conductivity with respect to density of dense hadronic and quark matter. By considering the simple massless limit for the quark matter and two different effective…

Nuclear Theory · Physics 2023-03-02 Debashree Sen , Naosad Alam , Sabyasachi Ghosh

This article focuses on the two-flavor color superconducting phase at moderate baryon density. In order to simultaneously investigate the chiral phase transition and the color superconducting phase transition, the Nambu-Gorkov formalism is…

High Energy Physics - Phenomenology · Physics 2019-07-24 Mei Huang

The phase structure and equation of state for two-flavor quark matter under compact star constraints is studied within a nonlocal chiral quark model. Chiral symmetry breaking leads to rather large, density dependent quark masses at the…

Astrophysics · Physics 2008-12-18 J. Berdermann

We study the phase structure and equation of state for two-flavor quark matter at low temperature under compact star constraints within a nonlocal chiral quark model. We find that the occurence of a two-flavor color superconducting (2SC)…

High Energy Physics - Phenomenology · Physics 2009-11-10 D. N. Aguilera , D. Blaschke , H. Grigorian
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