Hard-thermal-loop QED thermodynamics

作     者：苏楠 Jens O.Andersen Michael Strickland 

作者机构：Frankfurt Institute for Advanced Studies Department of PhysicsNorwegian University of Science and Technology Department of PhysicsGettysburg College 

出 版 物：《Chinese Physics C》 (中国物理C（英文版）)

年 卷 期：2010年第34卷第9期

页      面：1527-1529页

核心收录：

学科分类：0709[理学-地质学] 07[理学] 0708[理学-地球物理学] 0804[工学-仪器科学与技术] 0827[工学-核科学与技术] 0703[理学-化学] 0704[理学-天文学] 070202[理学-粒子物理与原子核物理] 0702[理学-物理学] 

基　　金：N. S.was supported by the Frankfurt International Graduate School for Science. M. S.was supported in part by the Helmholtz International Center for FAIR Landesoffensive zur Entwicklung Wissenschaftlich-konomischer Exzellenz program 

主　　题：resummation hard-thermal-loop thermal field theory QED free Energy 

摘      要：The weak-coupling expansion for thermodynamic quantities in thermal field theories is poorly convergent unless the coupling constant is *** discuss the calculation of the free energy for a hot gas of electrons and photons to three-loop order using hard-thermal-loop perturbation theory （HTLpt）.We show that the hard-thermal-loop perturbation reorganization improves the convergence of the successive approximations to the QED free energy at large coupling,e ～ *** reorganization is gauge invariant by construction,and due to the cancellations among various contributions,we obtain a completely analytic result for the resummed thermodynamic potential at three loops.