Block renormalization group transformations and overlap fermions

Details Block renormalization group transformations and overlap fermions Block renormalization group transformations and overlap fermions

2008-10-07

arxiv.org/abs/0810.1131v1

PoS LATTICE2008:028,2008

Physics

High Energy Physics

High Energy Physics - Lattice

7 Pages, Lattice 2008 (chiral symmetry)

Scientific paper

In this preliminary work, I provide the outline of an argument (leaving the full proof to a future publication) that there exists a valid renormalization group blocking transformation which converts the continuum fermion action into a Ginsparg-Wilson lattice action. I construct the blocking for the massless overlap operator as a specific example, indicating how other Ginsparg-Wilson lattice Dirac operators can be derived in a similar fashion. This renormalization group transformation modifies the gauge action and adds a number of irrelevant terms to the lattice action. The procedure is not valid for lattice Dirac operators which do not exactly satisfy the Ginsparg-Wilson relation, for example the Wilson operator.

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