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arXiv · 1505.05094

Crystalline chiral condensates as a component of compact stars

S. Carignano·E. J. Ferrer·V. de la Incera·L. Paulucci
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Abstract

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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S. Carignano, E. J. Ferrer, V. de la Incera, L. Paulucci. 2015-11-04. Crystalline chiral condensates as a component of compact stars. https://doi.org/10.1103/physrevd.92.105018

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