Why rooting fails

Details Why rooting fails Why rooting fails

2007-08-09

arxiv.org/abs/0708.1295v2

PoSLAT2007:007,2007

Physics

High Energy Physics

High Energy Physics - Lattice

10 pages, 5 figures. Invited talk at the XXV International Symposium on Lattice Field Theory, July 30 - August 4 2007, Regensb

Scientific paper

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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