Renormalization-group blocking the fourth root of the staggered determinant
Yigal Shamir
Abstract
Lattice QCD simulations with staggered fermions rely on the ``fourth-root trick.'' The validity of this trick has been proved for free staggered fermions using renormalization-group block transformations. I review the elements of the construction and discuss how it might be generalized to the interacting case.
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