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8 papers · 2 filters
The perfect action for non-degenerate staggered fermions
H. Dilger
The perfect action of free staggered fermions is calculated by blocking from the continuum for degenerate and non-degenerate flavor masses. The symmetry structure, connecting flavo…
Electroweak phase transition by four dimensional simulations
F. Csikor, Z. Fodor, J. Hein +3
The finite temperature phase transition in the SU(2)-Higgs model at a Higgs boson mass GeV is studied in numerical simulations on four dimensional lattices with tim…
Topological transitions in the euclidean 2d U(1)-Higgs model
Hermann Dilger
The two-dimensional U(1)-gauged Higgs model is studied on an euclidean lattice of size , where the temperature is of the order of the sphaleron mass. Th…
Scaling in the two-dimensional U(1)--Higgs model
Hermann Dilger, Jochen Heitger
We study the continuum limit of the U(1)--Higgs model with variable scalar field length, which is qualitatively different from the fixed length case. Our simulations concentra…
On the scaling of the electroweak interface tension at finite temperature
Joachim Hein, Jochen Heitger
We determine the interface tension of the finite-temperature electroweak phase transition in a numerical investigation of the SU(2)--Higgs model on a four-dimensional lattice with…
Linked cluster expansions beyond nearest neighbour interactions: convergence and graph classes
A. Pordt, T. Reisz
We generalize the technique of linked cluster expansions on hypercubic lattices to actions that couple fields at lattice sites which are not nearest neighbours. We show that in thi…