A link between measured neutron star masses and lattice QCD data. (arXiv:1212.5907v1 [astro-ph.SR]):
We study the hadron-quark phase transition in neutron star matter and the
structural properties of hybrid stars using an equation of state (EOS) for the
quark phase derived with the Field Correlator Method (FCM). We make use of
measured neutron star masses, and particularly the mass of PSR J1614-2230, to
constrain the values of the gluon condensate $G_2$ which is one of the EOS
parameter within the FCM. We find that the values of $G_2$ extracted from the
mass measurement of PSR J1614-2230 are fully consistent with the values of the
same quantity derived, within the FCM, from recent lattice QCD calculations of
the deconfinement transition temperature at zero baryon chemical potential. The
FCM thus provides a powerful tool to link numerical calculations of QCD on a
space-time lattice with neutron stars physics.
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