The failure of the usual gauge formalism in a class of gauge conditions

Hsu, J. P. ; Mac, E. ; Sudarshan, E. C. G. (1975) The failure of the usual gauge formalism in a class of gauge conditions Physics Letters B, 59 (5). pp. 471-474. ISSN 0370-2693

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Official URL: http://www.sciencedirect.com/science/article/pii/0...

Related URL: http://dx.doi.org/10.1016/0370-2693(75)90348-2

Abstract

For a class of gauge conditions the usual formalism for non-Abelian gauge theories leads to violation of unitarity. In contrast, the Lagrange multiplier formalism allows us to construct an adequate fictitious Lagrangian. The theory so obtained satisfies unitarity.

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