"Mean-field and Monte Carlo studies of five-dimensional gauge theories on the lattice"
Relatore: Prof. Francesco Knechtli- UniversitÓ di Wuppertal
08 Maggio 2012 ore 16.30
|Five-dimensional gauge theories play a role in extensions of the Standard
Model, where (some of) the fifth dimensional components of the gauge field
are identified with a Higgs field. Due to the non-renormalizability, a finite
ultra-violet cut-off has to be introduced. The formulation on a Euclidean
lattice is a natural choice which preserves the gauge symmetry. Away from
the perturbative regime, these theories can be studied by means of a
mean-field approximation and by Monte Carlo simulations. We will present
and compare results from these methods for SU(2) gauge theories with periodic
and orbifold boundary conditions.