Chromomagnetic instability and induced magnetic field in neutral two-flavor color superconductivity
Efrain J. Ferrer, Vivian de la Incera
DOI 10.1103/PhysRevD.76.114012 · Physical Review D
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Abstract
We find that the chromomagnetic instability existing in neutral two-flavor color superconductivity at moderate densities is removed by the formation of an inhomogeneous condensate of charged gluons and the corresponding induction of a magnetic field. It is shown that this inhomogeneous ground state is energetically favored over a homogeneous one. The spontaneous induction of a magnetic field in a color superconductor at moderate densities can be of interest for the astrophysics of compact stellar objects exhibiting strong magnetic fields as magnetars.
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