The pressure of strong coupling lattice QCD with heavy quarks, the hadron resonance gas model and the large N limit - High Energy Physics - LatticeReport as inadecuate




The pressure of strong coupling lattice QCD with heavy quarks, the hadron resonance gas model and the large N limit - High Energy Physics - Lattice - Download this document for free, or read online. Document in PDF available to download.

Abstract: In this paper we calculate the pressure of pure lattice Yang-Mills theoriesand lattice QCD with heavy quarks by means of strong coupling expansions.Dynamical fermions are introduced with a hopping parameter expansion, whichalso allows for the incorporation of finite quark chemical potential. We showthat in leading orders the results are in full agreement with expectations fromthe hadron resonance gas model, thus validating it with a first principlescalculation. For pure Yang-Mills theories we obtain the corresponding idealglueball gas, in QCD with heavy quarks our result equals that of an ideal gasof mesons and baryons. Another finding is that the Yang-Mills pressure in thelarge N limit is of order $\sim N^0$ to the calculated orders, when the inverse-t Hooft coupling is used as expansion parameter. This property is expected inthe confined phase, where our calculations take place.



Author: Jens Langelage, Owe Philipsen

Source: https://arxiv.org/



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