2005/03/31 by Efrain J. Ferrer, Vivian de la Incera, Cristina Manuel · 6 citations
Earth and Planetary Sciences · Physics and Astronomy · #High-pressure geophysics and materials #Physics of Superconductivity and Magnetism #Pulsars and Gravitational Waves Research #astro-ph #hep-ph #hep-th #nucl-th
paper · pdf · doi:10.1103/physrevlett.95.152002
published as Phys.Rev.Lett. 95 (2005) 152002 · version to be published in PRL
arxiv created 2005/08/28 · openalex publication_date 2005/10/06 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
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 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 field tends to strengthen the gaps formed by Q-charged and Q-neutral quarks that coupled among themselves through tree-level vertices. These gaps are enhanced by the field-dependent density of states of the Q-charged quarks on the Fermi surface. Our considerations are relevant for the study of highly magnetized compact stars.