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- Max Planck Institute for Mathematics in the SciencesDE139 papers
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8 papers · 2 filters
Landau gauge ghost and gluon propagators and the Faddeev-Popov operator spectrum
A. Sternbeck, E. -M. Ilgenfritz, M. Müller-Preussker +1
In this talk we report on a recent lattice investigation of the Landau gauge gluon and ghost propagators in pure SU(3) lattice gauge theory with a special emphasis on the Gribov co…
Perturbative Renormalisation for Low Moments of Generalised Parton Distributions with Clover Fermions
M. Gockeler, R. Horsley, H. Perlt +4
We present the non-forward quark matrix elements of operators with one and two covariant derivatives needed for the renormalisation of the first and second moments of generalised p…
Two-colour Lattice QCD with dynamical fermions at non-zero density versus Matrix Models
Gernot Akemann, Elmar Bittner
We provide first evidence that Matrix Models describe the low lying complex Dirac eigenvalues in a theory with dynamical fermions at non-zero density. Lattice data for gauge group…
Towards the infrared limit in SU(3) Landau gauge lattice gluodynamics
A. Sternbeck, E. -M. Ilgenfritz, M. Mueller-Preussker +1
We study the behavior of the gluon and ghost dressing functions in SU(3) Landau gauge at low momenta available on lattice sizes 12^4-32^4 at =5.8, 6.0 and 6.2. We demonstrate th…
Spontaneous Parity Violation
P. R. Crompton
We disprove the Vafa-Witten theorem on the impossibility of spontaneously breaking parity in vector-like gauge field theories, identifying a mechanism driven by quantum fluctuation…
Renormalisation of one-link quark operators for overlap fermions with Lüscher-Weisz gauge action
R. Horsley, H. Perlt, P. E. L. Rakow +2
We compute lattice renormalisation constants of one-link quark operators ({\it i.e.} operators with one covariant derivative) for overlap fermions and Lüscher-Weisz gauge action in…