Wilson, Fixed Point and Neuberger's Lattice Dirac Operator for the Schwinger Model *
نویسندگان
چکیده
We perform a comparison between different lattice regularizations of the Dirac operator for massless fermions in the framework of the single and two flavor Schwinger model. We consider a) the Wilson-Dirac operator at the critical value of the hopping parameter; b) Neuberger's overlap operator; c) the fixed point operator. We test chiral properties of the spectrum, dispersion relations and rotational invariance of the mesonic bound state propagators.
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تاریخ انتشار 2008