(Non)-perturbative properties of high-T QCD from lattice ... - Physics
(Non)-perturbative properties of high-T QCD from lattice ... - Physics
(Non)-perturbative properties of high-T QCD from lattice ... - Physics
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<strong>Non</strong>-<strong>perturbative</strong> Debye screeningleading order perturbation theory: m D = g D (T)T√1 + n f6T c < T< ∼10T c : non-<strong>perturbative</strong> effects are well representedby an ”A-factor”: m D ≡ Ag D (T)T, A ≃ 1.5<strong>perturbative</strong> limit is reached very slowly4.0(logarithms at work!!)SU(3)10 100 β G=144 32 310 10T/Λ MS1010.543m D /Tm D /T=Ag(T)A=1.42(2)N f =0N f =23.02.0m/gT210T/T c1 1.5 2 2.5 3 3.5 41.00.0xβ G=72 24 3β G=40 24 3β G=24 24 3β G=12 24 310 −3 10 −2 10 −1O.Kaczmarek,F.Zantow, PRD 71 (2005) 114510 K.Kajantie et al, PRL 79 (1997) 3130F. Karsch, x<strong>QCD</strong>, July 2008 – p. 7/32
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