3 papers
hep-th1999
Two-Loop Quark Self-Energy in a New Formalism (II): Renormalization of the Quark Propagator in the Light-Cone Gauge
George Leibbrandt, Jimmy D. Williams
The complete two-loop correction to the quark propagator, consisting of the spider, rainbow, gluon bubble and quark bubble diagrams, is evaluated in the noncovariant light-cone gau…
hep-th1996
Split Dimensional Regularization for the Coulomb Gauge
George Leibbrandt, Jimmy Williams
A new procedure for regularizing Feynman integrals in the noncovariant Coulomb gauge is proposed for Yang-Mills theory. The procedure is based on a variant of dimensional regulariz…
hep-th1994
Two-Loop Quark Self-Energy in a New Formalism: (I) Overlapping Divergences
George Leibbrandt, Jimmy Williams
A new integration technique for multi-loop Feynman integrals, called the matrix method, is developed and then applied to the divergent part of the overlapping two-loop quark self-e…