Hard thermal effective action in QCD through the thermal operator

Ashok Das; J. Frenkel

doi:10.1103/physrevd.76.025009

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arXiv · hep-th/0703079

Hard thermal effective action in QCD through the thermal operator

Ashok Das·J. Frenkel

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Abstract

Through the application of the thermal operator to the zero temperature retarded Green's functions, we derive in a simple way the well known hard thermal effective action in QCD. By relating these functions to forward scattering amplitudes for on-shell particles, this derivation also clarifies the origin of important properties of the hard thermal effective action, such as the manifest Lorentz and gauge invariance of its integrand.

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Ashok Das, J. Frenkel. 2007-06-01. Hard thermal effective action in QCD through the thermal operator. https://doi.org/10.1103/physrevd.76.025009

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