科研之友
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摘要
We find that the quark propagator constructed from the domain-wall fermion operator has L-s - 1 extra poles as well as the pole that realizes the physical quark in the continuum limit. We show the energy-momentum dispersion relation for the physical and unphysical poles of Mobius domain-wall fermions in free field theory at finite Ls. The dependence of extra pole energies on the Mobius parameter b - c and on the domain-wall height M-5 is investigated. Our result suggests that small values of b - c set a large lower bound on the unphysical pole masses and the contribution of these poles could be suppressed well by calculating with small b - c.
- 出版日期2017-10-16
