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We study the phase diagram of dense, locally neutral three-flavor quark matter as a function of the strange quark mass, the quark chemical potential, and the temperature, employing a general nine-parameter ansatz for the gap matrix. At zero…

High Energy Physics - Phenomenology · Physics 2008-11-26 Stefan B. Ruester , Igor A. Shovkovy , Dirk H. Rischke

The phase diagram of strongly interacting matter at non-zero temperature and baryon chemical potential is calculated within a 3-flavor NJL-type quark model with realistic quark masses. The model exhibits spontaneous chiral symmetry breaking…

High Energy Physics - Phenomenology · Physics 2009-11-07 M. Buballa , M. Oertel

Employing an extended three flavor version of the NJL model we discuss in detail the phase diagram of quark matter. The presence of quark as well as of diquark condensates gives raise to a rich structure of the phase diagram. We study in…

High Energy Physics - Phenomenology · Physics 2009-11-07 F. Gastineau , R. nebauer , J. Aichelin

Phase diagram of a chiral random matrix model with the degenerate ud quarks and the s quark at finite temperature and density is presented. The model exhibits a first-order transition at finite temperature for three massless flavors, owing…

High Energy Physics - Phenomenology · Physics 2010-04-06 H. Fujii , T. Sano

We investigate the effects of the dynamical formation of the chiral condensates on color superconducting phases under the electric and color neutrality constraints at vanishing temperature. We shall show that the phase appearing next to the…

High Energy Physics - Phenomenology · Physics 2009-11-10 H. Abuki , M. Kitazawa , T. Kunihiro

In neutral cold quark matter that is sufficiently dense that the strange quark mass M_s is unimportant, all nine quarks (three colors; three flavors) pair in a color-flavor locked (CFL) pattern, and all fermionic quasiparticles have a gap.…

High Energy Physics - Phenomenology · Physics 2008-11-26 Mark Alford , Chris Kouvaris , Krishna Rajagopal

Matter at high density and low temperature is expected to be a color superconductor, which is a degenerate Fermi gas of quarks with a condensate of Cooper pairs near the Fermi surface that induces color Meissner effects. At the highest…

High Energy Physics - Phenomenology · Physics 2008-12-18 Mark G. Alford , Krishna Rajagopal , Thomas Schaefer , Andreas Schmitt

In neutral cold quark matter that is sufficiently dense that the strange quark mass M_s is unimportant, all nine quarks (three colors; three flavors) pair in a color-flavor locked (CFL) pattern, and all fermionic quasiparticles have a gap.…

High Energy Physics - Phenomenology · Physics 2009-11-10 Mark Alford , Chris Kouvaris , Krishna Rajagopal

We study the color-flavor locked phase of QCD with three massless quarks at high chemical potential and small non zero temperatures. We make use of the recently introduced effective action to describe such a phase. We obtain the exact order…

High Energy Physics - Phenomenology · Physics 2009-10-31 R. Casalbuoni , R. Gatto

The best natural candidates for the realization of color superconductivity are quark stars -not yet confirmed by observation- and the extremely dense cores of compact stars, many of which have very large magnetic fields. To reliably predict…

Nuclear Theory · Physics 2008-11-26 Efrain J. Ferrer , Vivian de la Incera

We introduce a random matrix model with the symmetries of QCD with two colors at nonzero isospin and baryon chemical potentials and temperature. We analyze its phase diagram and find phases with condensation of pion and diquark states in…

High Energy Physics - Phenomenology · Physics 2009-11-10 B. Klein , D. Toublan , J. J. M. Verbaarschot

Thermal color superconducting phase transitions in high density three-flavor quark matter are investigated in the Ginzburg-Landau approach. Effects of nonzero strange quark mass, electric and color charge neutrality, and direct instantons…

High Energy Physics - Phenomenology · Physics 2009-11-10 K. Iida , T. Matsuura , M. Tachibana , T. Hatsuda

Phase structure and phase transitions in dense QCD are studied using the Schwinger-Dyson (SD) method in the improved ladder approximation. We construct the Cornwall-Jackiw-Tomboulis (CJT) effective potentials at finite temperature for two…

High Energy Physics - Phenomenology · Physics 2009-11-10 Hiroaki Abuki

Cold, asymptotically dense three-flavor quark matter is in the color-flavor locked (CFL) phase, in which all quarks pair in a particularly symmetric fashion. At smaller densities, taking into account a nonzero strange quark mass and…

Nuclear Theory · Physics 2008-11-26 Krishna Rajagopal , Andreas Schmitt

We study the effects of the gapless color-flavor locked (gCFL) phase on the equation of state of strongly interacting matter in the range of baryonic chemical potential involved in a compact star. We analyze the possibility of a phase…

Nuclear Theory · Physics 2009-11-11 A. Lavagno , G. Pagliara

The structure of the phase diagram of strongly interacting matter at moderate densities is calculated within a 3-flavor NJL-type quark model with realistic quark masses. We focus on the influence of the selfconsistently determined effective…

High Energy Physics - Phenomenology · Physics 2007-05-23 M. Oertel , M. Buballa

We calculate the phase diagram of color and electrically neutral quark matter in weak equilibrium using the NJL model at high baryon densities. We extend previous analyses by taking into account the possibility of formation of pseudoscalar…

High Energy Physics - Phenomenology · Physics 2007-05-23 Harmen J. Warringa

We analyze the phases of dense quark matter at nonzero quark masses. We map out the phase diagrams for charged quark matter as well as charge neutral matter containing leptons. We find that in Color Flavor Locked (CFL) quark matter, the…

High Energy Physics - Phenomenology · Physics 2009-11-07 David B. Kaplan , Sanjay Reddy

We address the phase structure of color superconducting quark matter at high quark density. Under the electric and color neutrality conditions there appear various phases as a result of the Fermi surface mismatch among different quark…

High Energy Physics - Phenomenology · Physics 2007-05-23 Kenji Fukushima

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
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