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arxiv: 1505.05094 · v2 · pith:BPOUHUNOnew · submitted 2015-05-19 · ⚛️ nucl-th · astro-ph.HE· hep-ph

Crystalline chiral condensates as a component of compact stars

classification ⚛️ nucl-th astro-ph.HEhep-ph
keywords magneticchiralcompactcondensatesequationfieldmassesobjects
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We investigate the influence of spatially inhomogeneous chiral symmetry-breaking condensates in a magnetic field background on the equation of state for compact stellar objects. After building a hybrid star composed of nuclear and quark matter using the Maxwell construction, we find, by solving the Tolman-Oppenheimer-Volkoff equations for stellar equilibrium, that our equation of state supports stars with masses around 2 $M_\odot$ for values of the magnetic field that are in accordance with those inferred from magnetar data. The inclusion of a weak vector interaction term in the quark part allows one to reach 2 solar masses for relatively small central magnetic fields, making this composition a viable possibility for describing the internal degrees of freedom of this class of astrophysical objects.

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