• Emerging translational variance : vacuum polarization energy of the 𝜙6 kink 

      Weigel, H. (Hindawi, 2017-07-30)
      We propose an efficient method to compute the vacuum polarization energy of static field configurations that do not allow decomposition into symmetric and antisymmetric channels in one space dimension. In particular, we ...
    • Quantum corrections to the kink-antikink potential 

      Lee, Zander (Stellenbosch : Stellenbosch University, 2017-03)
      ENGLISH ABSTRACT : In quantum field theory vacuum polarization effects may drastically alter the classical properties of non-perturbative field configurations. This is especially the case when comparing the vacuum ...
    • Spectral methods for coupled channels with a mass gap 

      Weigel, H.; Quandt, M.; Graham, N. (American Physical Society, 2018)
      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 example we consider the vacuum polarization ...