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arxiv: hep-ph/0412298 · v2 · submitted 2004-12-21 · ✦ hep-ph · astro-ph· nucl-th

The role of quark mass in cold and dense perturbative QCD

Eduardo S. Fraga , Paul Romatschke This is my paper
classification ✦ hep-ph astro-phnucl-th
keywords quarkmasscouplingrolestrangealphacoldcompute
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We consider the equation of state of QCD at high density and zero temperature in perturbation theory to first order in the coupling constant $\alpha_s$. We compute the thermodynamic potential including the effect of a non-vanishing mass for the strange quark and show that corrections are sizable. Renormalization group running of the coupling and the strange quark mass plays a crucial role. The structure of quark stars is dramatically modified.

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