This title appears in the Scientific Report :
2011
Please use the identifier:
http://hdl.handle.net/2128/11141 in citations.
Please use the identifier: http://dx.doi.org/10.1103/PhysRevD.83.114512 in citations.
Brillouin improvement for Wilson fermions
Brillouin improvement for Wilson fermions
We present a parameter-free Wilson-type lattice Dirac operator with an 81-point stencil for the covariant derivative and the Laplacian, which attempts to minimize the breaking of rotational symmetry near the boundary of the Brillouin zone. The usefulness of this "Brillouin operator" in pra...
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Personal Name(s): | Dürr, S. |
---|---|
Koutsou, G. | |
Contributing Institute: |
Jülich Supercomputing Center; JSC |
Published in: | Physical Review D Physical review / D, 83 83 (2011 2011) 11 11, S. 114512 114512 |
Imprint: |
[S.l.]
Soc.
2011
2011-06-21 2011-06-01 |
Physical Description: |
114512 |
DOI: |
10.1103/PhysRevD.83.114512 |
Document Type: |
Journal Article |
Research Program: |
Computational Science and Mathematical Methods Scientific Computing |
Series Title: |
Physical Review D
83 |
Subject (ZB): | |
Link: |
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Publikationsportal JuSER |
Please use the identifier: http://dx.doi.org/10.1103/PhysRevD.83.114512 in citations.
We present a parameter-free Wilson-type lattice Dirac operator with an 81-point stencil for the covariant derivative and the Laplacian, which attempts to minimize the breaking of rotational symmetry near the boundary of the Brillouin zone. The usefulness of this "Brillouin operator" in practical applications is explored by studying the scaling of pseudoscalar decay constants in quenched QCD, with rather good results in the physical charm region. We also investigate the suitability of this operator as a kernel to the overlap procedure. Here, the resulting overlap operator is found to be cheaper to construct and significantly better localized than the variety with the standard Wilson kernel. |