Spectral methods for coupled channels with a mass gap
CITATION: Weigel, H., Quandt, M. & Quandt, M. 2018. Spectral methods for coupled channels with a mass gap. Physical Review D, 97(3):036017, doi:10.1103/PhysRevD.97.036017.
The original publication is available at https://journals.aps.org/prd
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 energy of a kinklike soliton built from two real scalar fields with different mass parameters.