Probing the QCD vacuum with flavour singlet objects: $\eta'$ on the lattice

B. Orth; H. Neff; J. Viehoff; K. Schilling; N.Eicker; P. Ueberholz; S. Guesken; Th. Lippert; T. Struckmann

arxiv: hep-lat/0006012 · v1 · submitted 2000-06-08 · ✦ hep-lat

Probing the QCD vacuum with flavour singlet objects: η' on the lattice

T. Struckmann , K. Schilling , P. Ueberholz , N.Eicker , S. Guesken , Th. Lippert , H. Neff , B. Orth

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J. Viehoff

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classification ✦ hep-lat

keywords vacuumactivebetachargeconfigurationscorrelatordefinitedependency

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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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Probing the QCD vacuum with flavour singlet objects: η' on the lattice

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