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

V. A. Miransky, I. A. Shovkovy, and L. C. R. Wijewardhana
Phys. Rev. D 64, 096002 – Published 3 October 2001
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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] charmoniumlike bound states. The corresponding binding energy is also estimated.

  • Received 19 April 2001

DOI:https://doi.org/10.1103/PhysRevD.64.096002

©2001 American Physical Society

Authors & Affiliations

V. A. Miransky*

  • Department of Applied Mathematics, University of Western Ontario, London, Ontario N6A 5B7, Canada

I. A. Shovkovy*

  • School of Physics and Astronomy, University of Minnesota, Minneapolis, Minnesota 55455

L. C. R. Wijewardhana

  • Physics Department, University of Cincinnati, Cincinnati, Ohio 45221-0011

  • *On leave of absence from Bogolyubov Institute for Theoretical Physics, 252143, Kiev, Ukraine.

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Vol. 64, Iss. 9 — 1 November 2001

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