Finite BRST Mapping in Higher-Derivative Models |
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Authors: | Pavel Yu Moshin Sudhaker Upadhyay Ricardo A Castro |
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Institution: | 1.Faculty of Physics,National Research Tomsk State University,Tomsk,Russia;2.Centre for Theoretical Studies,Indian Institute of Technology Kharagpur,Kharagpur,India;3.Institute of Physics,University of S?o Paulo,S?o Paulo,Brazil |
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Abstract: | We continue the study of finite field-dependent BRST (FFBRST) symmetry in the quantum theory of gauge fields. An expression for the Jacobian of path integral measure is presented, depending on a finite field-dependent parameter, and the FFBRST symmetry is then applied to a number of well-established quantum gauge theories in a form which incudes higher-derivative terms. Specifically, we examine the corresponding versions of the Maxwell theory, non-Abelian vector field theory, and gravitation theory. We present a systematic mapping between different forms of gauge-fixing, including those with higher-derivative terms, for which these theories have better renormalization properties. In doing so, we also provide the independence of the S-matrix from a particular gauge-fixing with higher derivatives. Following this method, a higher-derivative quantum action can be constructed for any gauge theory in the FFBRST framework. |
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