Charge Neutral Two-Flavor Quark Matter in the Instanton Vacuum and Compact Stars

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Author(s)

Abstract

Two-flavor (up and down) quark matter in the instanton vacuum is investigated using a mean-field approximation at T=0. Electric charge neutrality is imposed for β-equilibrated quark matter. At finite chemical potential, a new charge neutral mixed phase is found between the chiral symmetry broken (CC) phase and the 2-flavor color superconducting (2SC) phase. The mixed phase is a mixture of a negatively charged CC subphase and a positively charged 2SC subphase with the appropriate volume ratio in a uniform electron gas. In addition, particle number densities, the effect of a finite current quark mass on the phase structure, the quark matter equation of state and compact stars are also investigated in this model.

Journal

  • Progress of Theoretical Physics

    Progress of Theoretical Physics 115(5), 909-929, 2006-05-25

    Published for the Yukawa Institute for Theoretical Physics and the Physical Society of Japan

References:  40

Codes

  • NII Article ID (NAID)
    110004749485
  • NII NACSIS-CAT ID (NCID)
    AA00791455
  • Text Lang
    ENG
  • Article Type
    ART
  • ISSN
    0033068X
  • NDL Article ID
    7922531
  • NDL Source Classification
    ZM35(科学技術--物理学)
  • NDL Call No.
    Z53-A468
  • Data Source
    CJP  NDL  NII-ELS 
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