Volume 544 - 43rd International Conference on High Energy Physics (ICHEP2026) - Session New Developments in Quantum Field Theory, String Theory and Quantum Information in HEP
Generalized Mandelstam-Leibbrandt regularization
J. Alfaro
Full text: Not available
Abstract
Algebraic non-covariant gauges are used often in string theory, Chern-Simons theory, gravitation and gauge theories. Loop integrals, however, have spurious singularities that need to be regularized. The most popular and consistent regularization is the Mandelstam- Leibbrandt(ML) prescription.
In this work we extends the ML prescription outside the light cone. It shares all the properties of
light-cone ML regularization: It preserves naive power counting and gauge
invariance. Moreover, using dimensional regularization(DR), we get a closed
form for the basic integrals, including divergent and finite pieces. These results simplify calculations in gauge theories and open new avenues for applications in
non-local models.
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