Ward-Takahashi Identity in Denominator Regularization at One Loop
Abstract
Explicit analytic expressions for the electron self-energy and the vertex correction in quantum electrodynamics are derived at one loop using the recently proposed regularization scheme known as denominator regularization, assisted by its correspondence with dimensional regularization to determine the coefficient functions, which are a specific ingredient of this approach. We then show that the regularized amplitudes satisfy the Ward-Takahashi identity, thereby ensuring that gauge symmetry is preserved after regularization.
Fields of Study & Subjects
Particle physics theoretical and experimental studies
Quantum and Classical Electrodynamics
Quantum Chromodynamics and Particle Interactions
Publication details
- Journal / source
- arXiv (Cornell University)
- Publication date
- 10 February 2026
- Language
- EN
- Document type
- Preprint