Moebius Algorithm for Domain Wall and GapDW Fermions
msra(2009)
摘要
The M\"obius domain wall action \cite{Brower:2004xi} is a generalization of
Shamir's action, which gives exactly the same overlap fermion lattice action as
the separation ($L_s$) between the domain walls is taken to infinity. The
performance advantages of the algorithm are presented for small ensembles of
quenched, full QCD domain wall and Gap domain wall lattices
\cite{Vranas:2006zk}. In particular, it is shown that at the larger lattice
spacings relevant to current dynamical simulations M\"obius fermions work well
together with GapDWF, reducing $L_s$ by more than a factor of two. It is noted
that there is a precise map between the domain wall and effective overlap
action at finite quark mass including finite $L_s$ chiral violations so that
the Ward-Takahashi identities for the axial and vector currents are exactly
equivalent in the two formulations.
更多查看译文
关键词
high energy physics,dynamic simulation,domain wall
AI 理解论文
溯源树
样例
生成溯源树,研究论文发展脉络
Chat Paper
正在生成论文摘要