8 papers · 1 filter
The ice-limit of Coulomb gauge Yang-Mills theory
Thomas Heinzl, Anton Ilderton, Kurt Langfeld +2
In this paper we describe gauge invariant multi-quark states generalising the path integral framework developed by Parrinello, Jona-Lasinio and Zwanziger to amend the Faddeev-Popov…
Is the ground state of Yang-Mills theory Coulombic?
Thomas Heinzl, Anton Ilderton, Kurt Langfeld +3
We study trial states modelling the heavy quark-antiquark ground state in SU(2) Yang-Mills theory. A state describing the flux tube between quarks as a thin string of glue is found…
Center vortices and the quark propagator in SU(2) gauge theory
Patrick O. Bowman, Kurt Langfeld, Derek B. Leinweber +4
We study the behavior of the AsqTad quark propagator in Landau gauge on quenched SU(2) gauge configurations under the removal of center vortices. In contrast to recent results in S…
Relation between chiral symmetry breaking and confinement in YM-theories
Franziska Synatschke, Andreas Wipf, Kurt Langfeld
Spectral sums of the Dirac-Wilson operator and their relation to the Polyakov loop are thoroughly investigated. The approach by Gattringer is generalized to mode sums which reconst…
Computational Methods in Quantum Field Theory
Kurt Langfeld
After a brief introduction to the statistical description of data, these lecture notes focus on quantum field theories as they emerge from lattice models in the critical limit. For…
Centre Vortices in SU(3)
Alan Ó Cais, Waseem Kamleh, Kurt Langfeld +3
We investigate the effectiveness of using smearing as a means to generate a preconditioning transformation for gauge fields prior to fixing to Maximal Centre Gauge. This still leav…