Perturbative quantum field theory in the string-inspired formalism

  title={Perturbative quantum field theory in the string-inspired formalism},
  author={Christian Schubert},
  journal={Physics Reports},
  • C. Schubert
  • Published 5 January 2001
  • Physics
  • Physics Reports

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

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

Cylinder quantum field theories at small coupling

: We show that any 2D scalar field theory compactified on a cylinder and with a Fourier expandable potential V is equivalent, in the small coupling limit, to a 1D theory involving a massless particle

Generalized LKF Transformations for $$\boldsymbol{N}$$ -Point Fermion Correlators in QED

Abstract Within the worldline approach to quantum electrodynamics (QED), a change of the photon’s covariant gauge parameter $$\xi$$ is investigated to analyse the non-perturbative gauge dependence of

SUSY in the sky with gravitons

Picture yourself in the wave zone of a gravitational scattering event of two massive, spinning compact bodies (black holes, neutron stars or stars). We show that this system of genuine astrophysical

Baby universes and worldline field theories

The quantum gravity path integral involves a sum over topologies that invites comparisons to worldsheet string theory and to Feynman diagrams of quantum field theory. However, the latter are

Classical black hole scattering from a worldline quantum field theory

A precise link is derived between scalar-graviton S-matrix elements and expectation values of operators in a worldline quantum field theory (WQFT), both used to describe classical scattering of a

Dynamically assisted Schwinger effect at strong coupling with its holographic extension

At strong-coupling and weak-field limit, the scalar Schwinger effect is studied by the field-theoretical method of worldline instantons for dynamic fields of single-pulse and sinusoidal types. By

Three-loop Euler-Heisenberg Lagrangian in 1+1 QED. Part I. Single fermion-loop part

A bstractWe study the three-loop Euler-Heisenberg Lagrangian in spinor quantum electrodynamics in 1+1 dimensions. In this first part we calculate the one-fermion-loop contribution, applying both




  • Phys. B 385
  • 1992


  • Phys. B 379
  • 1992


  • Rev. D 53
  • 1996

Effective Lagrangians in Quantum Electrodynamics

The electron propagator in a constant external magnetic field.- The mass operator in a constant external magnetic field.- The polarization tensor in a constant external magnetic field.- One-loop


  • Lett. B 366
  • 1996


  • Rev. 128
  • 1962

Lectures given at 36th Cracow School of Theoretical Physics

  • Act. Phys. Polon. B
  • 1996


  • Lett. B 256
  • 1991


  • 16
  • 1975

The Bern-Kosower Rules and their Relation to Quantum Field Theory, PhD thesis, Stanford

  • 1993