Exact chiral symmetry on the lattice and the GinspargWilson relation
Abstract
It is shown that the GinspargWilson relation implies an exact symmetry of the fermion action, which may be regarded as a lattice form of an infinitesimal chiral rotation. Using this result it is straightforward to construct lattice Yukawa models with unbroken flavour and chiral symmetries and no doubling of the fermion spectrum. A contradiction with the NielsenNinomiya theorem is avoided, because the chiral symmetry is realized in a different way than has been assumed when proving the theorem.
 Publication:

Physics Letters B
 Pub Date:
 June 1998
 DOI:
 10.1016/S03702693(98)004237
 arXiv:
 arXiv:heplat/9802011
 Bibcode:
 1998PhLB..428..342L
 Keywords:

 High Energy Physics  Lattice;
 High Energy Physics  Theory
 EPrint:
 plain tex source, 8 pages, no figures