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Probing the QCD vacuum with overlap fermions
Robert G. Edwards, Urs M. Heller
We use low lying eigenvectors of the overlap-Dirac operator as a probe of the QCD vacuum. If instantons play a significant role one would expect the low lying eigenmodes of the ove…
Heavy-light decay constants with three dynamical flavors
C. Bernard, T. Burch, S. Datta +7
We present preliminary results for the heavy-light leptonic decay constants in the presence of three light dynamical flavors. We generate dynamical configurations with improved sta…
Zero-modes of the QED Neuberger Dirac operator
Bernd A. Berg, Urs M. Heller, Harald Markum +2
We consider compact lattice QED in the quenched approximation. First, we briefly summarize the spectrum of the staggered Dirac operator and its connection with random matrix t…
Patterns of Spontaneous Chiral Symmetry Breaking in Vectorlike Gauge Theories
P. H. Damgaard, U. M. Heller, R. Niclasen +1
It has been conjectured that spontaneous chiral symmetry breaking in strongly coupled vectorlike gauge theories falls into only three different classes, depending on the gauge grou…
Lattice results for the decay constant of heavy-light vector mesons
C. Bernard, P. Williams, S. Datta +7
We compute the leptonic decay constants of heavy-light vector mesons in the quenched approximation. The reliability of lattice computations for heavy quarks is checked by comparing…
The QCD spectrum with three quark flavors
Claude Bernard, Tom Burch, Thomas A. DeGrand +7
We present results from a lattice hadron spectrum calculation using three flavors of dynamical quarks - two light and one strange, and quenched simulations for comparison. These si…