# The 35th International Symposium on Lattice Field Theory

18-24 June 2017
Palacio de Congresos
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# Contribution Parallel

Seminarios 6+7
Weak Decays and Matrix Elements

# Dispersion relation and unphysical poles of Mobius domain-wall fermions in free field theory at finite Ls

## Speakers

• Dr. Masaaki TOMII

## Content

We investigate the dispersion relation of Mobius domain-wall fermions in free field theory at finite $L_s$. We find that the quark propagator constructed from the domain-wall fermion operator has $L_s-1$ extra poles as well as the pole which realizes the physical quark in the continuum limit. The unphysical contribution of these extra poles could be significant when we introduce heavy quarks. In this talk, we will show the basic properties of these unphysical poles and discuss the optimal choice of Mobius parameters to minimize their contribution to the 4D physics.

## Preferred track (if multiple tracks have been selected)

Weak Decays and Matrix Elements