229 citations · 469 across the 26 of their papers we have counts for
3 papers · 2 filters
Quantum mechanical path integrals in the first quantised approach to quantum field theory
James P. Edwards, Christian Schubert
Perturbative quantum field theory usually uses second quantisation and Feynman diagrams. The worldline formalism provides an alternative approach based on first quantised particle…
Compton-like scattering of a scalar particle with N photons and one graviton
Naser Ahmadiniaz, Filippo Maria Balli, Olindo Corradini +2
Tree-level scattering amplitudes for a scalar particle coupled to an arbitrary number N of photons and a single graviton are computed. We employ the worldline formalism as the main…
Dihedral Invariant Polynomials in the effective Lagrangian of QED
Idrish Huet, Michel Rausch de Traubenberg, Christian Schubert
We present a new group-theoretical technique to calculate weak field expansions for some Feynman diagrams using invariant polynomials of the dihedral group. In particular we show r…