Probing the QCD vacuum with flavour singlet objects: $\eta'$ on the lattice
msra(2000)
摘要
We present a study on the direct determination of the $\eta '$ mass on the
full set of SESAM and T$\chi$L QCD vacuum configurations with 2 active flavours
of Wilson fermions, at $\beta = 5.6$. We observe a definite dependency of the
two-loop correlator on the topological charge sector.
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关键词
high energy physics,topological charge
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