Magnetic CFL and Astrophysical Implications
The stability of the color flavor locked phase in the
presence of a strong magnetic field is investigated within
the phenomenological MIT bag model, taking into account the
variation of the strange quark mass, the baryon density,
the magnetic fi eld, as well as the bag and gap parameters.
It is found that the minimum value of the energy per baryon
in a color flavor locked state at vanishing pressure is
lower than the corresponding one for unpaired magnetized
strange quark matter and, as the magnetic fi eld increases,
the energy per baryon decreases. This implies that magnetized
color flavor locked matter is more stable and could become the
ground state inside neutron stars. The mass-radius relation
for such stars is also studied.