The perfect action for non-degenerate staggered fermions
Abstract
The perfect action of free staggered fermions is calculated by blocking from the continuum for degenerate and non-degenerate flavor masses. The symmetry structure, connecting flavor transformations and translations, is explained directly from the blocking scheme. It is convenient to use a modified Fourier transformation, respecting this connection, to treat the spin-flavor structure of the blockspins. The perfect action remains local in the non-degenerate case; it is explicitly calculated in two dimensions. I finally comment on the relation of the blocking scheme to the transition from Dirac-Kähler fermions to staggered fermions.
- Publication:
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Nuclear Physics B
- Pub Date:
- February 1997
- DOI:
- 10.1016/S0550-3213(97)00070-9
- arXiv:
- arXiv:hep-lat/9610029
- Bibcode:
- 1997NuPhB.490..331D
- Keywords:
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- High Energy Physics - Lattice
- E-Print:
- 14 pages, Latex2e, 1 Latex figure, some minor changes and two references added