Seminario
"Fivedimensional Algorithms for Chiral Lattice Fermions"
Relatore: Prof. Antony D. Kennedy University od Edinburgh (UK)
Sala Feynman
02 Maggio 2006 ore 15.30
Abstract

We introduce a lattice Dirac operator for onshell Chiral
fermions, and show that it must satisfy the GinspargWilson
relation, and thus can be written in the form of
Neuberger's operator. It is useful to use the optimal
rational approximation to the sign function therein, and
this then requires the inversion of a rational function
of two noncommuting operators (sign and gamma_5), which
leads us to a large class of fivedimensional formulations,
including the Domain Wall and various of its
generalisations.


