T
Thomas DeGrand
Researcher at University of Colorado Boulder
Publications - 284
Citations - 40163
Thomas DeGrand is an academic researcher from University of Colorado Boulder. The author has contributed to research in topics: Quantum chromodynamics & Quark. The author has an hindex of 42, co-authored 281 publications receiving 35263 citations. Previous affiliations of Thomas DeGrand include University of Helsinki.
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Perturbation theory for fat-link fermion actions
Claude Bernard,Thomas DeGrand +1 more
TL;DR: In this paper, weak coupling perturbation theory for lattice actions in which the fermions couple to smeared gauge links is discussed, and the scale of the logarithm that appears in cases where an anomalous dimension is present.
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One loop matching coefficients for a variant overlap action: And some of its simpler relatives
TL;DR: In this article, one-loop perturbative calculations of matching coefficients between matrix elements in continuum regulated QCD and lattice QCD with overlap fermions, with emphasis a recently-proposed variant discretization of the overlap, are presented.
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Scaling and topological charge of a fixed-point action for su(2) gauge theory
TL;DR: In this paper, a few-parameter approximate fixed-point action for SU(2) pure gauge theory was constructed via Monte Carlo simulation and subject to scaling tests, and the critical coupling for deconfinement for lattices of temporal extent N t = 2, 3, 4, the torelon mass at fixed physical volume, and string tension from Wilson loops.
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Phase Structure of Lattice N=4 Super Yang-Mills
TL;DR: In this paper, the phase diagram of the super Yang-Mills theory regulated on a space-time lattice is studied and the lattice formulation is both gauge invariant and retains at all lattice spacings one exactly preserved supersymmetry charge.
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Properties of the a1 meson from lattice qcd
TL;DR: The mass and decay constant of the a_1 meson is determined using Monte Carlo simulation of lattice QCD and it is found to be 1250 MeV and 0.03 GeV, in good agreement with experiment.