On the BFFT quantization of first order systems

Details On the BFFT quantization of first order systems On the BFFT quantization of first order systems

1999-09-16

arxiv.org/abs/hep-th/9909115v1

J.Math.Phys. 40 (1999) 5306-5317

Physics

High Energy Physics

High Energy Physics - Theory

18 pages, LaTeX, no figures, to appear in Journal of Mathematical Physics

Scientific paper

By using the field-antifield formalism, we show that the method of Batalin, Fradkin, Fradkina and Tyutin to convert Hamiltonian systems submitted to second class constraints introduces compensating fields which do not belong to the BRST cohomology at ghost number one. This assures that the gauge symmetries which arise from the BFFT procedure are not obstructed at quantum level. An example where massive electrodynamics is coupled to chiral fermions is considered. We solve the quantum master equation for the model and show that the respective counterterm has a decisive role in extracting anomalous expectation values associated with the divergence of the Noether chiral current.

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