TY  - JOUR
AU  - Dürr, Stephan
AU  - Weber, Johannes H.
TI  - Topological properties of minimally doubled fermions in two spacetime dimensions
JO  - Physical review / D
VL  - 105
IS  - 11
SN  - 2470-0010
CY  - Melville, NY
PB  - Inst.
M1  - FZJ-2023-00114
SP  - 114511
PY  - 2022
AB  - The two-dimensional Schwinger model is used to explore how lattice fermion operators perceive the global topological charge $q \in \mathbb{Z}$ of a given background gauge field. We focus on Karsten-Wilczek and Borici-Creutz fermions, which are minimally doubled, and compare them to Wilson, Brillouin, naive, staggered and Adams fermions. For each operator the eigenvalue spectrum in a background with $q \neq 0$ is determined along with the chiralities of the eigenmodes, and the spectral flow of the pertinent hermitean operator is worked out. We find that Karsten-Wilczek and Borici-Creutz fermions perceive the global topological charge $q$ in the same way as staggered and naive fermions do.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000822545100013
DO  - DOI:10.1103/PhysRevD.105.114511
UR  - https://juser.fz-juelich.de/record/916811
ER  -