Abstract
Preregularization is a procedure for evaluating non-dimensionally- continued field theoretical amplitudes by constraining ambiguous terms within such amplitudes to absorb any Ward-identity violating terms that may arise. Usually these ambiguous terms correspond to some parametriz- able arbitrariness in the loop momenta percolating into shift-of- integration-variable surface terms peculiar to integer-dimensional space- time.1,2,3 Indeed, since the proposal of preregularization, originally motivated to retain a spacetime structure consistent with supersymmetry,4 the procedure has been shown to be a “regularization-free” method for analyzing anomalies perturbatively. Preregularization enables a distinction to be made between the manifest finiteness of anomaly-generating amplitudes5 and the Ward-identity ambiguities associated with such amplitudes. In particular, preregularization has been shown to be applicable to the WA triangle anomaly,2,4,6,7 two dimensional anomalies,8,9 six-and- higher-dimensional anomalies,9,10 a perturbative demonstration of the Adler Bardeen Theorem,11 the supercurrent anomaly,12 and (as discussed by Mann elsewhere in this volume) superstring anomalies. 13
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Our Euclidean space conventions = γ +μ, -ψ = ψ+, γ5 = γ1 γ2 γ3 γ4, Tr γ μ γ ν γ ρ γ σ γ 5=4ε μ ν ρσ] differ from those of refs. 15 and 16, which employ antihermitian y-matrices. For our conventions, Fujikawa’s eigenbasis are eigenstates of i#-hence, the parenthetical factor of i.
The relationship between perturbative and path integral approaches to the anomaly has also been considered by R. Delbourgo and G. Thompson, Phys. Rev. D32, 3300 (1985).
V. Elias, G. McKeon, T. Steele, T.N. Sherry, R.B. Mann and T.F. Treml Univ. of Western Ontario Preprint UW0/86/137.
A difference in relative sign with ref. 15 is accounted for by differing y5 conventions.
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© 1987 Plenum Press, New York
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Elias, V. (1987). Preregularization And The Ambiguity Structure of the Jacobian for Chiral Symmetry Transformations. In: Lee, H.C., Elias, V., Kunstatter, G., Mann, R.B., Viswanathan, K.S. (eds) Super Field Theories. NATO Science Series, vol 160. Springer, Boston, MA. https://doi.org/10.1007/978-1-4613-0913-0_19
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