Open access
Date
2012-04Type
- Journal Article
ETH Bibliography
yes
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Abstract
The numerical properties of staggered Dirac operators with a taste-dependent mass term proposed by Adams [1, 2] and by Hoelbling [3] are compared with those of ordinary staggered and Wilson Dirac operators. In the free limit and on (quenched) interacting configurations, we consider their topological properties, their spectrum, and the resulting pion mass. Although we also consider the spectral structure, topological properties, locality, and computational cost of an overlap operator with a staggered kernel, we call attention to the possibility of using the Adams and Hoelbling operators without the overlap construction. In particular, the Hoelbling operator could be used to simulate two degenerate flavors without additive mass renormalization, and thus without fine-tuning in the chiral limit. Show more
Permanent link
https://doi.org/10.3929/ethz-b-000049865Publication status
publishedExternal links
Journal / series
Journal of High Energy PhysicsVolume
Pages / Article No.
Publisher
SpringerSubject
Lattice Gauge Field Theories; Lattice Quantum Field TheoryOrganisational unit
03622 - Troyer, Matthias (ehemalig) / Troyer, Matthias (former)
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ETH Bibliography
yes
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