50 citations · 90 across the 4 of their papers we have counts for
4 papers
Scattering phases on finite lattices in the broken phase of the four-dimensional O(4)-ϕ^4 theory
M. Goeckeler, H. A. Kastrup, J. Westphalen +1
According to a proposal of Luescher it is possible to determine elastic scattering phases in infinite volume from the energy spectrum of two-particle states in a periodic box. We d…
Scattering phases in the broken phase of the 4-d O(4) non-linear sigma-model
J. Westphalen, F. Zimmermann, M. Goeckeler +1
Using Luescher's method we determine the elastic scattering phases in the broken phase of the 4-dimensional O(4) non-linear sigma-model from the two-particle energy spectrum in a M…
Unstable particles in finite volume: The broken phase of the -d non-linear -model
Frank Zimmermann, Jörg Westphalen, Meinulf Göckeler +1
According to a proposal of Lüscher it is possible to determine elastic scattering phases in infinite volume from the energy spectrum of two-particle states in a periodic box. We de…
Scaling analysis of the O(4)-symmetric -theory in the broken phase
Meinulf Göckeler, Hans A. Kastrup, Thomas Neuhaus +1
We study the -symmetric -theory in the scaling region of the broken phase using the standard and a Symanzik improved action with infinite bare self-coupling . A hig…