Diquarks in cold dense QCD with two flavors

V. A. Miransky, I. A. Shovkovy, L. C.R. Wijewardhana

Research output: Contribution to journalArticle

33 Scopus citations

Abstract

We derive and analyze the Bethe-Salpeter equations for spin zero diquarks in the color superconducting phase of cold dense QCD with two massless flavors. The spectrum of diquarks contains an infinite number of massive excitations and five (nearly) massless pseudoscalars. The former are singlets while the latter include a doublet, an antidoublet and a singlet with respect to the unbroken SU(2)c. Because of approximate parity doubling at a large chemical potential, all massive states come in pairs. The decay constants, as well as the velocities of the (nearly) massless pseudoscalars, are derived. The different role of the Meissner effect for tightly bound states and quasiclassical bound states is revealed.

Original languageEnglish (US)
Article number085025
Pages (from-to)1-27
Number of pages27
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume62
Issue number8
StatePublished - Oct 15 2000
Externally publishedYes

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ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)

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