Magnetic Color-Flavor Locking Phase in High-Density QCD

Journal Article · Fri Oct 07 04:00:00 EDT 2005 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.95.152002· OSTI ID:20696541

Ferrer, Efrain J; Incera, Vivian de la; Manuel, Cristina ^[1]

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1. Department of Physics, Western Illinois University, Macomb, Illinois 61455 (United States)

We investigate the effects of an external magnetic field in the gap structure of a color superconductor with three massless quark flavors. Using an effective theory with four-fermion interactions, inspired by one-gluon exchange, we show that the long-range component B-tilde of the external magnetic field that penetrates the color-flavor locked phase modifies its gap structure, producing a new phase of lower symmetry. A main outcome of our study is that the B-tilde field tends to strengthen the gaps formed by Q-tilde-charged and Q-tilde-neutral quarks that coupled among themselves through tree-level vertices. These gaps are enhanced by the field-dependent density of states of the Q-tilde-charged quarks on the Fermi surface. Our considerations are relevant for the study of highly magnetized compact stars.

• OSTI ID: 20696541
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 15 Vol. 95; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
COLOR MODEL
FERMI INTERACTIONS
FERMI LEVEL
FLAVOR MODEL
GLUONS
MAGNETIC FIELDS
QUANTUM CHROMODYNAMICS
QUARK MATTER
QUARKS
SUPERCONDUCTORS
SYMMETRY