92 citations · 507 across the 24 of their papers we have counts for
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Variational treatment of quenched QED using the worldline technique
A. W. Schreiber, C. Alexandrou, R. Rosenfelder
There has been growing interest in studying the behaviour of QED in its strong coupling limit. The reason for this is not only that it serves as a simple prototype gauge theory for…
Variational Field Theoretic Approach to Relativistic Scattering
C. Alexandrou, R. Rosenfelder, A. W. Schreiber
Nonperturbative polaron variational methods are applied, within the so-called particle or worldline representation of relativistic field theory, to study scattering in the context…
First Order Variational Calculation of Form Factor in a Scalar Nucleon--Meson Theory
A. W. Schreiber, R. Rosenfelder
We investigate a relativistic quantum field theory in the particle representation using a non-perturbative variational technique. The theory is that of two massive scalar particles…
Variational Calculation of Relativistic Meson-Nucleon Scattering In Zeroth Order
A. W. Schreiber, R. Rosenfelder, C. Alexandrou
We extend the polaron variational treatment previously developed for the propagator to the case where one nucleon and external mesons are present. Using the particle representa…
Polaron Variational Methods In The Particle Representation Of Field Theory : II. Numerical Results For The Propagator
R. Rosenfelder, A. W. Schreiber
For the scalar Wick-Cutkosky model in the particle representation we perform a similar variational calculation for the 2-point function as was done by Feynman for the polaron probl…
Polaron Variational Methods In The Particle Representation Of Field Theory : I. General Formalism
R. Rosenfelder, A. W. Schreiber
We apply nonperturbative variational techniques to a relativistic scalar field theory in which heavy bosons (``nucleons'') interact with light scalar mesons via a Yukawa coupling.…