ar X iv : 0 70 8 . 12 95 v 1 [ he p - la t ] 9 A ug 2 00 7 Why rooting fails
نویسنده
چکیده
I explore the origins of the unphysical predictions from rooted staggered fermion algorithms. Before rooting, the exact chiral symmetry of staggered fermions is a flavored symmetry among the four "tastes." The rooting procedure averages over tastes of different chiralities. This averaging forbids the appearance of the correct 't Hooft vertex for the target theory.
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