In the modified NJL model, low vacuum pressure with a first-order chiral transition supports massive non-strange quark stars consistent with pulsar data while high vacuum pressure with crossover is ruled out, constraining current quark mass to 4.08-4.13 MeV and suggesting GW170817 could involve such
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QCD vacuum pressure and its influence on the equation of state of non-strange quark stars
In the modified NJL model, low vacuum pressure with a first-order chiral transition supports massive non-strange quark stars consistent with pulsar data while high vacuum pressure with crossover is ruled out, constraining current quark mass to 4.08-4.13 MeV and suggesting GW170817 could involve such