TY  - CONF
AU  - Durr, Stephan
AU  - Weber, Johannes H.
TI  - Minimally doubled fermions and topology in 2D
VL  - 396
PB  - Sissa Medialab Trieste, Italy
M1  - FZJ-2023-00115
SP  - 556
PY  - 2022
N1  - 8 pages, 7 figures, talk given at the 38th International Symposium on Lattice Field Theory (LATTICE2021), 26th-30th July 2021, Zoom/Gather@Massachusetts Institute of Technology
AB  - We use the two-dimensional Schwinger model to investigate how lattice fermions perceive the global topological charge $q\in\mathbf{Z}$ of a given gauge background $U$. After a warm-up part devoted to staggered, Adams, Wilson and naive fermions, we consider Karsten-Wilczek and Borici-Creutz fermions, which are in the class of minimally doubled lattice fermion actions. We focus on the eigenvalue spectrum and the chiralities of the pertinent eigenmodes. Without modification both minimally doubled actions are found to be insensitive to topology, but in either case it is possible to define a suitable species-splitting term to make the resulting operator topology aware.
T2  - 38th International Symposium on Lattice Field Theory
CY  - 26 Jul 2021 - 30 Jul 2021, MIT, Boston (virtual) (USA)
Y2  - 26 Jul 2021 - 30 Jul 2021
M2  - MIT, Boston (virtual), USA
LB  - PUB:(DE-HGF)8 ; PUB:(DE-HGF)7
DO  - DOI:10.22323/1.396.0556
UR  - https://juser.fz-juelich.de/record/916812
ER  -