arXiv:hep-lat/0103022·v2·High Energy Physics — Lattice
Exact Zero-Modes of the Compact QED Dirac Operator
Bernd A. Berg🇺🇸 · Urs M. Heller🇺🇸 · Harald Markum🇦🇹 · Rainer Pullirsch🇦🇹 · Wolfgang Sakuler🇦🇹
Abstract
We calculate the low-lying eigenmodes of the Neuberger overlap-Dirac operator for compact lattice QED in the quenched approximation. In the strong coupling phase we find exact zero-modes, quite similar as in non-Abelian lattice QCD. Subsequently we make an attempt to identify responsible topological excitations of the U(1) lattice gauge theory.
Comments: 10 pages, 4 figures, minor changes (typos corrected, table updated, reference added)