Masses of the pseudo Nambu-Goldstone bosons in the two flavor color superconducting phase
- 3 October 2001
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review D
- Vol. 64 (9), 096002
- https://doi.org/10.1103/physrevd.64.096002
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 charmoniumlike bound states. The corresponding binding energy is also estimated.
Keywords
Other Versions
This publication has 21 references indexed in Scilit:
- Diquark composites in the color superconducting phase of two flavor dense QCDNuclear Physics B - Proceedings Supplements, 2001
- Colour superconductivity in compact starsJournal of Physics G: Nuclear and Particle Physics, 2001
- Diquarks in cold dense QCD with two flavorsPhysical Review D, 2000
- Meson masses in high density QCDPhysics Letters B, 2000
- Perturbative nature of color superconductivityPhysical Review D, 2000
- Magnetic interactions, the renormalization group and color superconductivity in high density QCDNuclear Physics B, 2000
- Gaps and critical temperature for color superconductivityPhysical Review D, 2000
- Schwinger-Dyson approach to color superconductivity in dense QCDPhysical Review D, 2000
- Superconductivity from perturbative one-gluon exchange in high density quark matterPhysical Review D, 1999
- Effective action for composite operatorsPhysical Review D, 1974