QCDの高温摂動論とそのパデ近似による改良(熱場の量子論とその応用,研究会報告)
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概要
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Fade approximates (PA's) are constructed from the perturbative coefficients of the free energy through O(g^5) in hot QCD. Pade summation is shown to reduce the renormalization-scale dependence substantially even at temperature (T) as low as 250 MeV. Also, PA's predict that the free energy does not deviate more than 10 % from the Stefan-Boltzmann limit for T > 250 MeV. A resumed perturbation based on the δ-expansion method is also studied and applied for the O(4) σ model at finite T.
- 素粒子論グループ 素粒子研究編集部の論文
- 1998-10-20
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