Phase diagram of dense neutral three-flavor quark matter

Stefan B. Rüster; Igor A. Shovkovy; Dirk H. Rischke

doi:10.1016/j.nuclphysa.2004.07.008

Phase diagram of dense neutral three-flavor quark matter

Stefan B. Rüster, Igor A. Shovkovy, Dirk H. Rischke

Research output: Contribution to journal › Article › peer-review

77 Scopus citations

Abstract

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 temperature and small values of the strange quark mass, the ground state of matter corresponds to the color-flavor-locked (CFL) phase. At some critical value of the strange quark mass, this is replaced by the recently proposed gapless CFL (gCFL) phase. We also find several other phases, for instance, a metallic CFL (mCFL) phase, a so-called uSC phase where all colors of up quarks are paired, as well as the standard two-flavor color-superconducting (2SC) phase and the gapless 2SC (g2SC) phase.

Original language	English (US)
Pages (from-to)	127-146
Number of pages	20
Journal	Nuclear Physics A
Volume	743
Issue number	1-3
DOIs	https://doi.org/10.1016/j.nuclphysa.2004.07.008
State	Published - Oct 18 2004
Externally published	Yes

ASJC Scopus subject areas

Nuclear and High Energy Physics

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title = "Phase diagram of dense neutral three-flavor quark matter",

abstract = "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 temperature and small values of the strange quark mass, the ground state of matter corresponds to the color-flavor-locked (CFL) phase. At some critical value of the strange quark mass, this is replaced by the recently proposed gapless CFL (gCFL) phase. We also find several other phases, for instance, a metallic CFL (mCFL) phase, a so-called uSC phase where all colors of up quarks are paired, as well as the standard two-flavor color-superconducting (2SC) phase and the gapless 2SC (g2SC) phase.",

author = "R{\"u}ster, {Stefan B.} and Shovkovy, {Igor A.} and Rischke, {Dirk H.}",

note = "Funding Information: The authors would like to thank Michael Buballa and Mei Huang for interesting discussions, and Axel Maas for suggesting to include Fig. 11(b). The work of I.S. was supported by Gesellschaft f{\"u}r Schwerionenforschung (GSI) and by Bundesministerium f{\"u}r Bildung und Forschung (BMBF).",

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doi = "10.1016/j.nuclphysa.2004.07.008",

language = "English (US)",

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T1 - Phase diagram of dense neutral three-flavor quark matter

AU - Rüster, Stefan B.

AU - Shovkovy, Igor A.

AU - Rischke, Dirk H.

N1 - Funding Information: The authors would like to thank Michael Buballa and Mei Huang for interesting discussions, and Axel Maas for suggesting to include Fig. 11(b). The work of I.S. was supported by Gesellschaft für Schwerionenforschung (GSI) and by Bundesministerium für Bildung und Forschung (BMBF).

PY - 2004/10/18

Y1 - 2004/10/18

N2 - 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 temperature and small values of the strange quark mass, the ground state of matter corresponds to the color-flavor-locked (CFL) phase. At some critical value of the strange quark mass, this is replaced by the recently proposed gapless CFL (gCFL) phase. We also find several other phases, for instance, a metallic CFL (mCFL) phase, a so-called uSC phase where all colors of up quarks are paired, as well as the standard two-flavor color-superconducting (2SC) phase and the gapless 2SC (g2SC) phase.

AB - 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 temperature and small values of the strange quark mass, the ground state of matter corresponds to the color-flavor-locked (CFL) phase. At some critical value of the strange quark mass, this is replaced by the recently proposed gapless CFL (gCFL) phase. We also find several other phases, for instance, a metallic CFL (mCFL) phase, a so-called uSC phase where all colors of up quarks are paired, as well as the standard two-flavor color-superconducting (2SC) phase and the gapless 2SC (g2SC) phase.

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JF - Nuclear Physics A

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