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The Ua(1) Problem On The Lattice With Ginsparg-wilson Fermions
We show how it is possible to give a precise and unambiguous implementation of the Witten--Veneziano formula for the eta' mass on the lattice, which looks like the formal continuum one, if the expression of the topological charge density operator, suggested by fermions obeying the Ginsparg--Wil...
| Autores principales: | , , , |
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| Lenguaje: | eng |
| Publicado: |
2001
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| Materias: | |
| Acceso en línea: | https://dx.doi.org/10.1016/S0550-3213(02)00093-7 http://cds.cern.ch/record/513515 |