Hamburg 2016 – scientific programme
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T: Fachverband Teilchenphysik
T 13: Quantenfeldtheorie und Gittereichtheorie (Theorie)
T 13.1: Talk
Monday, February 29, 2016, 11:00–11:15, VMP8 SR 106
On the Eigenvalue Spectrum of (Staggered) Domain Wall Fermions — Christian Hoelbling1 and •Christian Zielinski2,1 — 1Department of Physics, University of Wuppertal, Germany — 2Division of Mathematical Sciences, Nanyang Technological University, Singapore
We explore spectral properties of staggered domain wall lattice fermions, which were recently proposed by Adams [Phys. Lett. B699 (2011) 394–397]. They differ from the usual domain wall fermion construction by replacing the Wilson kernel with the novel staggered Wilson Dirac operator. In both cases one formulates fermions with approximate chiral symmetry in d dimensions by means of massive interacting fermions in d+1 dimensions. In the limit of large extents of the extra dimension Ns, the low-energy effective d-dimensional Dirac operator approaches the overlap operator with an exact chiral symmetry. In this work we investigate the eigenvalue spectra of both the d-dimensional effective operators and the (d+1)-dimensional bulk operators for d=2,4. We implement several variations of the original proposal and examine the dependence on Ns, various degrees of gauge link smearing and different topological sectors.