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arXiv · hep-ph/0701086

QCD effective action with a most general homogeneous field background

Y. M. Cho·J. H. Kim·D. G. Pak
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Abstract

We consider one-loop effective action of SU(3) QCD with a most general constant chromomagnetic (chromoelectric) background which has two independent Abelian field components. The effective potential with a pure magnetic background has a local minimum only when two Abelian components H_{μν}^3 and H_{μν}^8 of color magnetic field are orthogonal to each other. The non-trivial structure of the effective action has important implication in estimating quark-gluon production rate and p_T-distribution in quark-gluon plasma. In general the production rate depends on three independent Casimir invariants, in particular, it depends on the relative orientation between chromoelectric fields.

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Y. M. Cho, J. H. Kim, D. G. Pak. 2007-01-11. QCD effective action with a most general homogeneous field background. https://doi.org/10.1142/s0217732306021918

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