37 citations · 214 across the 14 of their papers we have counts for
10 papers · 1 filter
Spectral Methods for Coupled Channels with a Mass Gap
H. Weigel, M. Quandt, N. Graham
We develop a method to compute the vacuum polarization energy for coupled scalar fields with different masses scattering off a background potential in one space dimension. As an ex…
Isospin Invariance and the Vacuum Polarization Energy of Cosmic Strings
H. Weigel, M. Quandt, N. Graham
We corroborate the previously applied spectral approach to compute the vacuum polarization energy of string configurations in models similar to the standard model of particle physi…
Quantum Stabilization of Cosmic Strings
H. Weigel, M. Quandt, N. Graham
In the standard model, stabilization of a classically unstable cosmic string may occur through the quantum fluctuations of a heavy fermion doublet. We review numerical results from…
On the Casimir Energy of Frequency Dependent Interactions
N. Graham, M. Quandt, H. Weigel
Vacuum polarization (or Casimir) energies can be straightforwardly computed from scattering data for static field configurations whose interactions with the fluctuating field are f…
Gauge Invariance and Vacuum Energies of Non-Abelian String-Configurations
H. Weigel, M. Quandt
We improve on a method to compute the fermion contribution to the vacuum polarization energy of string-like configurations in a non-Abelian gauge theory. We establish the new metho…
Vacuum Energies of Non--Abelian String--Configurations in 3+1 Dimensions
H. Weigel, M. Quandt, N. Graham +1
We develop a method to compute the fermion contribution to the vacuum polarization energy of string--like configurations in a non--abelian gauge theory. This calculation has been h…