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Effective Field Theory Dimensional Regularization

Dirk Lehmann·Gary Prezeau
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Abstract

A Lorentz-covariant regularization scheme for effective field theories with an arbitrary number of propagating heavy and light particles is given. This regularization scheme leaves the low-energy analytic structure of Greens functions intact and preserves all the symmetries of the underlying Lagrangian. The power divergences of regularized loop integrals are controlled by the low-energy kinematic variables. Simple diagrammatic rules are derived for the regularization of arbitrary one-loop graphs and the generalization to higher loops is discussed.

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Dirk Lehmann, Gary Prezeau. 2001-02-14. Effective Field Theory Dimensional Regularization. https://doi.org/10.1103/physrevd.65.016001

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