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Baryonic matter at high density and low temperature is a color superconductor. In real world, this state of matter may naturally appear inside compact stars. A construction of a hybrid compact star with two flavor color superconducting…

High Energy Physics - Phenomenology · Physics 2007-05-23 Igor Shovkovy , Matthias Hanauske , Mei Huang

The appearance of quark matter in the centers of compact stars has a number of astrophysical implications. In this contribution I discuss the structure and stability of compact stars, gravitational radiation from non-axisymmetric…

High Energy Astrophysical Phenomena · Physics 2015-05-20 Armen Sedrakian

Compact stars may contain quark matter in their interiors at densities exceeding several times the nuclear saturation density. We explore models of such compact stars where there are two first-order phase transitions: the first from nuclear…

High Energy Astrophysical Phenomena · Physics 2017-10-25 Mark G. Alford , Armen Sedrakian

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 investigate the properties of the hadron-quark mixed phase in compact stars using a Brueckner-Hartree-Fock framework for hadronic matter and the MIT bag model for quark matter. We find that the equation of state of the mixed phase is…

Nuclear Theory · Physics 2009-11-13 Toshiki Maruyama , Satoshi Chiba , Hans-Josef Schulze , Toshitaka Tatsumi

The properties of hybrid stars formed by hadronic and quark matter in $\beta$-equilibrium are described by appropriate equations of state (EoS) in the framework of the quark meson coupling (QMC) model. In the present work we include the…

Nuclear Theory · Physics 2009-11-10 P. K. Panda , D. P. Menezes , C. Providência

Recent indications for high neutron star masses (M \sim 2 M_sun) and large radii (R > 12 km) could rule out soft equations of state and have provoked a debate whether the occurence of quark matter in compact stars can be excluded as well.…

Nuclear Theory · Physics 2017-08-23 D. B. Blaschke , T. Klahn , F. Sandin

We perform a study of the possible existence of hybrid stars with color superconducting quark cores using a specific hadronic model in a combination with an NJL-type quark model. It is shown that the constituent mass of the non-strange…

Nuclear Theory · Physics 2009-11-10 M. Buballa , F. Neumann , M. Oertel , I. Shovkovy

The cooling mechanism of compact stars with quark cores in the color-flavor locked phase is discussed. It is argued that the high thermal conductivity of the quark core plays a key role in the stellar cooling. It implies that the cooling…

High Energy Physics - Phenomenology · Physics 2017-08-23 Igor A. Shovkovy , Paul J. Ellis

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

High Energy Physics - Phenomenology · Physics 2009-09-29 David Blaschke , Dmitri N. Voskresensky , Hovik Grigorian

In this paper we investigate the thermal evolution of hybrid stars, objects composed of a quark matter core, enveloped by ordinary hadronic matter. Our purpose is to investigate how important are the microscopic properties of the quark core…

High Energy Astrophysical Phenomena · Physics 2012-05-31 R. Negreiros , V. Dexheimer , S. Schramm

High massive compact stars have been reported recently in the literature, providing strong constraints on the properties of the ultradense matter beyond the saturation nuclear density. In view of these results, the calculations of quark…

High Energy Astrophysical Phenomena · Physics 2014-07-18 Hilario Rodrigues , Sergio B. Duarte , Jos Carlos T. de Oliveira

After a brief review of the phenomena expected in cold dense quark matter, color superconductivity and color-flavor locking, we sketch some implications of recent developments in our understanding of cold dense quark matter for the physics…

High Energy Physics - Phenomenology · Physics 2008-11-26 Mark Alford , Jeffrey A. Bowers , Krishna Rajagopal

The thermal conductivity of the color-flavor locked phase of dense quark matter is calculated. The dominant contribution to the conductivity comes from photons and Nambu-Goldstone bosons associated with the breaking of baryon number, both…

Astrophysics · Physics 2017-08-23 I. A. Shovkovy , P. J. Ellis

The main objective of this work is to study the structure, composition, and oscillation modes of color superconducting quark stars with intense magnetic fields. We adopted the MIT bag model within the color superconductivity CFL framework,…

High Energy Astrophysical Phenomena · Physics 2022-05-18 Marcos Osvaldo Celi , Mauro Mariani , Milva Gabriela Orsaria , Lucas Tonetto

I review recent progress in our understanding of the color superconducting phase of matter above nuclear density, giving particular emphasis to the effort to find observable signatures of the presence of this phase in compact stars.

High Energy Physics - Phenomenology · Physics 2014-11-17 Mark Alford

We give an introduction crystalline color superconductivity, arguing that it is likely to occur wherever quark matter in which color-flavor locking does not occur is found. We survey the properties of this form of quark matter, and argue…

High Energy Physics - Phenomenology · Physics 2009-11-07 Krishna Rajagopal

The quark hadron phase transition in a rotating compact star has been studied. The NLZ-model has been used for the hadronic sector and the MIT Bag model has been used for the quark sector. It has been found that rotating twin star (third…

Astrophysics · Physics 2009-11-10 Abhijit Bhattacharyya , Sanjay K. Ghosh , Matthias Hanauske , Sibaji Raha

We discuss how the co-existence of hyperons, antikaon condensate and color superconducting quark matter in neutron star interior influences the gross properties of compact stars such as, the equation of state and mass-radius relationship.…

Astrophysics · Physics 2009-11-10 Sarmistha Banik , Debades Bandyopadhyay

We study a spin-1 single flavor color superconducting phase which results from a color-spin locking (CSL) interaction in two-flavor quark matter. This phase is particularly interesting for compact star cooling applications since the CSL…

High Energy Physics - Phenomenology · Physics 2009-11-11 D. N. Aguilera , D. Blaschke , M. Buballa , V. L. Yudichev