Domain-wall fermion with R5 symmetry
Journal
Physics Letters B
Date Issued
2015-05
Author(s)
Abstract
We present the domain-wall fermion operator which is reflection symmetric in the fifth dimension, with the approximate sign function S(H) of the effective 4-dimensional Dirac operator satisfying the bound |1-S(λ)|≤2dZ for λ2∈[λmin2,λmax2], where dZ is the maximum deviation |1-xRZ(x)|max of the Zolotarev optimal rational polynomial RZ(x) of 1/x for x∈[1,λmax2/λmin2], with degrees (n-1, n) for Ns=2n, and (n, n) for Ns=2n+1.
Type
journal article