ar X iv : h ep - p h / 02 10 19 5 v 1 1 3 O ct 2 00 2 1 Hard Thermal Loops and QCD
نویسنده
چکیده
The conventional weak-coupling expansion for thermodynamic quantities in hot field theories shows poor convergence unless the coupling constant is tiny. I discuss screened perturbation theory (SPT) which is a way of reorganizing the perturbative expansion for scalar theories and hard-thermal-loop perturbation theory (HTLPT), which is its generalization to gauge theories. I present results for the pressure to three loops in SPT and to two loops in HTLPT. We compare the latter with threeand four-dimensional lattice simulations of pure-glue QCD.
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تاریخ انتشار 2002