Masses of the pseudo Nambu-Goldstone bosons in the two flavor color superconducting phase

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

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8 Scopus citations

Abstract

The masses of the pseudo Nambu-Goldstone bosons in the color superconducting phase of dense QCD with two light flavors are estimated by making use of the Cornwall-Jackiw-Tomboulis effective action. Parametrically, the masses of the doublet and antidoublet bosons are suppressed by a power of the coupling constant as compared to the value of the superconducting gap. This is qualitatively different from the mass expression for the singlet pseudo Nambu-Goldstone boson, resulting from nonperturbative effects. It is argued that the (anti) doublet pseudo Nambu-Goldstone bosons form colorless [with respect to the unbroken SU(2)c] charmonium-like bound states. The corresponding binding energy is also estimated.

Original languageEnglish (US)
Article number096002
JournalPhysical Review D
Volume64
Issue number9
StatePublished - Nov 1 2001
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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