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7 papers · 2 filters
The Perturbative Method Fails in Non-Abelian Models
A. Patrascioiu, E. Seiler
It is shown that perturbation theory in nonlinear -models as well gauge theories in dimension produces answers that depend on boundary conditions even after the i…
Study of a new simulation algorithm for dynamical quarks on the APE-100 parallel computer
B. Jegerlehner
First results on the autocorrelation behaviour of a recently proposed fermion algorithm by M. Lüscher are presented and discussed. The occurence of unexpected large autocorrelation…
The Schrödinger functional in QCD
Stefan Sint
The Schrödinger functional in Wilson's lattice QCD leads to a sensible classical continuum theory which can be taken as starting point for a perturbative analysis. In dimensional r…
A new simulation algorithm for lattice QCD with dynamical quarks
B. Bunk, K. Jansen, B. Jegerlehner +3
A previously introduced multi-boson technique for the simulation of QCD with dynamical quarks is described and some results of first test runs on a lattice with Wilso…
Universality and the approach to the continuum limit in lattice gauge theory
G. de Divitiis, R. Frezzotti, M. Guagnelli +5
The universality of the continuum limit and the applicability of renormalized perturbation theory are tested in the SU(2) lattice gauge theory by computing two different non-pertur…
Nonuniformity of the Expansion for Two-Dimensional Models
A. Patrascioiu, E. Seiler
We point out that the expansion, which is widely invoked to infer properties of the models, is nonuniform in the temperature, i.e. with decreasing temperature the…