2 citations · 2 across the 1 of their papers we have counts for
9 papers
Localization of lattice fermions: lessons for overlap
Benjamin Svetitsky, Yigal Shamir, Maarten Golterman
Lattice fermions in a fluctuating gauge field can show localization, much like electrons in a disordered potential. We study the spectrum of localized and extended states of superc…
Better Domain-Wall Fermions
Yigal Shamir
We discuss two modifications of domain-wall fermions, aimed to reduce the chiral-symmetry violations presently encountered in numerical simulations.
Abelian and Nonabelian Lattice Chiral Gauge Theories through Gauge Fixing
Wolfgang Bock, Maarten Golterman, Ka Chun Leung +1
After an introduction in which we review the fundamental difficulty in constructing lattice chiral gauge theories, we summarize the analytic and numerical evidence that abelian lat…
Feynman rules for non-perturbative sectors and anomalous supersymmetry Ward identities
A. Casher, Y. Shamir
We show that supersymmetry Ward identities contain an anomalous term which takes the form of a surface term in Hilbert space. In the one-instanton sector the anomalous term is the…
Gauge-fixing approach to lattice chiral gauge theories
Wolfgang Bock, Maarten F. L. Golterman, Yigal Shamir
We review the status of our recent work on the gauge-fixing approach to lattice chiral gauge theories. New numerical results in the reduced version of a model with a U(1) gauge sym…
A Supersymmetry Anomaly
Aharon Casher, Yigal Shamir
A supersymmetry anomaly is found in the presence of non-perturbative fields. When the action is expressed in terms of the correct quantum variables, anomalous surface terms appear…