Light hadron spectroscopy with O(a) improved dynamical fermions

Details Light hadron spectroscopy with O(a) improved dynamical fermions Light hadron spectroscopy with O(a) improved dynamical fermions

1998-08-17

arxiv.org/abs/hep-lat/9808016v1

Phys.Rev.D60:034507,1999

Physics

High Energy Physics

High Energy Physics - Lattice

38 pages, 14 Postscript figure, LaTeX

Scientific paper

10.1103/PhysRevD.60.034507

We present the first results for the static quark potential and the light hadron spectrum using dynamical fermions at $\beta=5.2$ using an O(a) improved Wilson fermion action together with the standard Wilson plaquette action for the gauge part. Sea quark masses were chosen such that the pseudoscalar-vector mass ratio, m_PS/m_V$, varies from 0.86 to 0.67. Finite-size effects are studied by using three different volumes, 8^3\cdot 24, 12^3\cdot 24 and 16^3\cdot 24. Comparing our results to previous ones obtained using the quenched approximation, we find evidence for sea quark effects in quantities like the static quark potential and the vector-pseudoscalar hyperfine splitting.

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