QED as a many-body theory of worldlines: General formalism and infrared structure

  title={QED as a many-body theory of worldlines: General formalism and infrared structure},
  author={Xabier Feal and Andrey Tarasov and Raju Venugopalan},
  journal={Physical Review D},
We discuss a reformulation of QED in which matter and gauge fields are integrated out explicitly, resulting in a many-body Lorentz covariant theory of 0+1 dimensional worldlines describing super-pairs of spinning charges interacting through Lorentz forces. This provides a powerful, string inspired definition of amplitudes to all loop orders. In particular, one obtains a more general formulation of Wilson loops and lines, with exponentiated dynamical fields and spin precession contributions, and… 

Gauge-invariant coefficients in perturbative quantum gravity

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Strong-field QED in Furry-picture momentum-space formulation: Ward identities and Feynman diagrams

  • Uwe Hernandez AcostaBurkhard Kampfer
  • Physics
  • 2023
The impact of a strong electromagnetic background field on otherwise perturbative QED processes is studied in the momentum-space formulation. The univariate background field is assumed to have finite



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