(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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The spatial string tensionDoes dimensional reduction work with light quarks?<strong>Non</strong>-<strong>perturbative</strong>, vanishes in <strong>high</strong>-T perturbation theory:√σs = −lim ln W(R x, R y )R x ,R y →∞ R x R y1.2√σsg 2 σ (T)T = c σ , c σ ≡ c 3 , g 2 E ≡ g2 σ T_T c/ Λ MS= 1.10...1.35c 3 : 3-d SU(3), LGTg 2 σ : 2-loop dim. red. pert. th.1.02-loop4-d SU(3), LGT data:G. Boyd et al. Nucl. Phys. B469 (1996) 419T/σ s1/20.81-loop0.64d <strong>lattice</strong>, N τ1= 81.0 2.0 3.0 4.0 5.0T / T c3-d SU(3), dimensional reduction:M. Laine, Y. Schröder, JHEP 0503 (2005) 067F. Karsch, x<strong>QCD</strong>, July 2008 – p. 9/32
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