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Title: Diquarks in the color-flavor locked phase of dense quark matter

Abstract

Diquark excitations of dense quark matter are considered in the framework of the Nambu-Jona-Lasinio model with three types of massless quarks in the presence of a quark number chemical potential {mu}. We investigate the effective action of meson and diquark fields at sufficiently high values of {mu}, where the color-flavor locked (CFL) phase is realized, and prove the existence of NG bosons in the sector of pseudoscalar diquarks. In the sector of scalar diquarks an additional NG boson is found, corresponding to the spontaneous breaking of the U(1){sub B} baryon symmetry in the CFL phase. Finally, the existence of massive scalar and pseudoscalar diquark excitations is demonstrated.

Authors:
 [1];  [2];  [3]
  1. Institut fuer Physik, Humboldt-Universitaet zu Berlin, 12489 Berlin (Germany)
  2. Institute for High Energy Physics, 142281, Protvino, Moscow Region (Russian Federation)
  3. (Protvino branch), 142281, Protvino, Moscow Region (Russian Federation)
Publication Date:
OSTI Identifier:
21011098
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. D, Particles Fields; Journal Volume: 75; Journal Issue: 4; Other Information: DOI: 10.1103/PhysRevD.75.045005; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; ACTION INTEGRAL; BARYONS; COLOR MODEL; EXCITATION; FLAVOR MODEL; MESONS; POTENTIALS; QUARK MATTER; QUARKS; SCALARS; SYMMETRY; SYMMETRY BREAKING; U-1 GROUPS

Citation Formats

Ebert, D., Klimenko, K. G., and Dubna University. Diquarks in the color-flavor locked phase of dense quark matter. United States: N. p., 2007. Web. doi:10.1103/PHYSREVD.75.045005.
Ebert, D., Klimenko, K. G., & Dubna University. Diquarks in the color-flavor locked phase of dense quark matter. United States. doi:10.1103/PHYSREVD.75.045005.
Ebert, D., Klimenko, K. G., and Dubna University. Thu . "Diquarks in the color-flavor locked phase of dense quark matter". United States. doi:10.1103/PHYSREVD.75.045005.
@article{osti_21011098,
title = {Diquarks in the color-flavor locked phase of dense quark matter},
author = {Ebert, D. and Klimenko, K. G. and Dubna University},
abstractNote = {Diquark excitations of dense quark matter are considered in the framework of the Nambu-Jona-Lasinio model with three types of massless quarks in the presence of a quark number chemical potential {mu}. We investigate the effective action of meson and diquark fields at sufficiently high values of {mu}, where the color-flavor locked (CFL) phase is realized, and prove the existence of NG bosons in the sector of pseudoscalar diquarks. In the sector of scalar diquarks an additional NG boson is found, corresponding to the spontaneous breaking of the U(1){sub B} baryon symmetry in the CFL phase. Finally, the existence of massive scalar and pseudoscalar diquark excitations is demonstrated.},
doi = {10.1103/PHYSREVD.75.045005},
journal = {Physical Review. D, Particles Fields},
number = 4,
volume = 75,
place = {United States},
year = {Thu Feb 15 00:00:00 EST 2007},
month = {Thu Feb 15 00:00:00 EST 2007}
}