The box diagram in Yukawa theory
arXiv:hep-th/0610309 · doi:10.1103/PhysRevD.75.065010
Abstract
We present a light-front calculation of the box diagram in Yukawa theory. The covariant box diagram is finite for the case of spin-1/2 constituents exchanging spin-0 particles. In light-front dynamics, however, individual time-ordered diagrams are divergent. We analyze the corresponding light-front singularities and show the equivalence between the light-front and covariant results by taming the singularities.
21 pages, 17 figures. submittes to Phys. Rev. D
References in corpus (8)
- Quantum Chromodynamics and Other Field Theories on the Light Cone
- Light-Front Bethe-Salpeter Equation
- Equivalence of Light-Front and Covariant Field Theory
- Poincare Invariant Algebra From Instant to Light-Front Quantization
- Relativistic bound states in Yukawa model
- Frame Dependence of Spin-One Angular Conditions in Light Front Dynamics
- Two-boson truncation of Pauli-Villars-regulated Yukawa theory
- The Rotation Average in Lightcone Time-Ordered Perturbation Theory
Cited by in corpus (6)
- Light-Front Quantum Chromodynamics: A framework for the analysis of hadron physics
- Two-body scattering states in Minkowski space and the Nakanishi integral representation onto the null plane
- Nonperturbative light-front Hamiltonian methods
- Projecting the Bethe-Salpeter Equation onto the Light-Front and back: A Short Review
- Light-front Ward-Takahashi Identity for Two-Fermion Systems
- High Resolution Nonperturbative Light-Front Simulations of the True Muonium Atom