New tests of the gauge-fixing approach to lattice chiral gauge theories
Wolfgang Bock, Maarten F. L. Golterman, Ka Chun Leung, Yigal Shamir
Abstract
We report on recent progress with the gauge-fixing approach to lattice chiral gauge theories. The bosonic sector of the gauge-fixing approach is studied with fully dynamical U(1) gauge fields. We demonstrate that it is important to formulate the Lorentz gauge-fixing action such that the dense set of lattice Gribov copies is removed, and the gauge-fixing action has a unique absolute minimum. We then show that the spectrum in the continuum limit contains only the desired massless photon, as expected.
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