Physics results from dynamical overlap fermion simulations

Details Physics results from dynamical overlap fermion simulations Physics results from dynamical overlap fermion simulations

2008-11-08

arxiv.org/abs/0811.1257v1

PoS LATTICE2008:011,2008

Physics

High Energy Physics

High Energy Physics - Lattice

15 pages, a plenary talk presented at the 26th International Symposium on Lattice Field Theory (Lattice 2008), Williamsburg, V

Scientific paper

I summarize the physics results obtained from large-scale dynamical overlap fermion simulations by the JLQCD and TWQCD collaborations. The numerical simulations are performed at a fixed global topological sector; the physics results in the theta-vacuum is reconstructed by correcting the finite volume effect, for which the measurement of the topological susceptibility is crucial. Physics applications we studied so far include a calculation of chiral condensate, pion mass, decay constant, form factors, as well as (vector and axial-vector) vacuum polarization functions and nucleon sigma term.

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