Comment on gauge choices and physical variables in QED

Details Comment on gauge choices and physical variables in QED Comment on gauge choices and physical variables in QED

1994-05-17

arxiv.org/abs/hep-th/9405149v1

NuovoCim.A108:123-126,1995

Physics

High Energy Physics

High Energy Physics - Theory

4 pages, SPbU-IP-94-8, Latex

Scientific paper

10.1007/BF02814863

We consider possible definitions of physical variables in QED. We demonstrate that the condition $\partial_i A_i$$=0$ is the most convenient one because it leads to path integral over physical components with local action. However, other choices, as $A_3=0$, are also possible. The standard expression for configuration space path integral in $A_3=0$ gauge is obtained starting with reduced phase space formulation. Contrary to the claims of the paper [M.Lavelle and D.McMullan,Phys. Lett. B316 (1993)172] the $A_3=0$ gauge is not overconstrained.

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