Theta vacuum in different gauges

Details Theta vacuum in different gauges Theta vacuum in different gauges

1998-06-25

arxiv.org/abs/hep-th/9806210v1

Mod.Phys.Lett. A14 (1999) 185-198

Physics

High Energy Physics

High Energy Physics - Theory

Latex file, 12 pages

Scientific paper

10.1142/S0217732399000225

In some recent papers it is claimed that the physical significance of the
vacuum angle theta for QCD-like theories depends on the chosen gauge condition.
We criticise the arguments that were given in support of this claim, and show
by explicit construction for the case of QED$_2$ that and why they fail,
confirming thereby the commonly accepted point of view.

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