Exactly massless quarks on the lattice
Abstract
It is suggested that the fermion determinant for a vectorlike gauge theory with strictly massless quarks can be represented on the lattice as det1+V/2, where V=X(X^{†}X)^{1/2} and X is the WilsonDirac lattice operator with a negative mass term. There is no undesired doubling and no need for any fine tuning. Several other appealing features of the formula are pointed out.
 Publication:

Physics Letters B
 Pub Date:
 January 1998
 DOI:
 10.1016/S03702693(97)013683
 arXiv:
 arXiv:heplat/9707022
 Bibcode:
 1998PhLB..417..141N
 Keywords:

 High Energy Physics  Lattice
 EPrint:
 7 pages, plain TeX