1,724 research outputs found
Lattice supersymmetry with domain wall fermions
Supersymmetry, like Poincare symmetry, is softly broken at finite lattice
spacing provided the gaugino mass term is strongly suppressed. Domain wall
fermions provide the mechanism for suppressing this term by approximately
imposing chiral symmetry. We present the first numerical simulations of N=1
supersymmetric SU(2) Yang-Mills on the lattice in four dimensions using domain
wall fermions.Comment: 3 pages, 2 figures, to appear in the Proceedings of the Meeting of
the Division of Particles and Fields of the American Physical Society
(DPF2000), 9-12 August 2000, Columbus, Ohio, US
Thermodynamics of free domain wall and overlap fermions
Studies of non-interacting lattice fermions give an estimate of the size of
discretization errors and finite size effects for more interesting problems
like finite temperature QCD. We present a calculation of the thermodynamic
equation of state for free domain wall and overlap fermions.Comment: 5 pages, 8 figures, Lattice 2000 (Finite Temperature
How well do domain wall fermions realize chiral symmetry?
In the domain wall fermion formulation, chiral symmetry breaking in full QCD
is expected to fall exponentially with the length of the extra dimension. We
measure the chiral symmetry breaking due to a finite extra dimension in two
ways, which can be affected differently by finite volume and explicit fermion
mass. For quenched QCD the two methods generally agree, except for the largest
extent of the extra dimension, which makes the limit uncertain. We have less
data for full QCD, but see exponential suppression for the method where we have
data.Comment: 3 pages, 2 figures, LATTICE99(hightemp
Interacting staggered domain wall fermions
The behavior of staggered domain wall fermions in the presence of gauge
fields is presented. In particular, their response to gauge fields with
nontrivial topology is discussed.Comment: Lattice2002(Chiral) proceedings, LaTeX, 3 pages 2 eps figure
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