TY  - CONF
AU  - Durr, Stephan
AU  - Ammer, Maximilian
TI  - Intra-taste eigenvalue splittings of staggered, Karsten-Wilczek and Borici-Creutz fermions in 2D
PB  - Sissa Medialab Trieste, Italy
M1  - FZJ-2023-05492
SP  - 291
PY  - 2022
AB  - Staggered, Karsten-Wilczek (KW) and Borici-Creutz (BC) fermions all retain a remnant chiral symmetry. The price to be payed is that they are doubled, and the resulting taste symmetry is broken by cut-off effects. We measure the size of the taste symmetry violation by determining the low-lying eigenvalues of these fermion operators in the two-dimensional Schwinger model which admits, like QCD, a global topological charge q∈ℤ of a given gauge configuration. We find that it matters whether the pertinent eigenmode is a would-be zero mode or a non-topological mode. The intra-taste splittings of these fermion formulations are all found to diminish with increasing β. Our goal is to verify standard Symanzik scaling for these taste-breaking effects.
T2  - The 39th International Symposium on Lattice Field Theory
CY  - 8 Aug 2022 - 13 Aug 2022, Bonn (Germany)
Y2  - 8 Aug 2022 - 13 Aug 2022
M2  - Bonn, Germany
LB  - PUB:(DE-HGF)8 ; PUB:(DE-HGF)7
DO  - DOI:10.22323/1.430.0291
UR  - https://juser.fz-juelich.de/record/1019545
ER  -