Lattice2010

Topological charge in two flavors QCD with optimal domain-wall fermion

15 Jun 2010, 12:10

20m

Room6 (Villasimius, Sardinia)

Chiral symmetry Parallel 24: Chiral symmetry

Speaker

Tung-Han Hsieh (Research Center for Applied Sciences, Academia Sinica)

Description

We determine the topological charge and its fluctuations for the gauge configurations generated by lattice simulations of 2 flavors QCD with optimal domain-wall fermion, on a ${16}^3\times 32\times 16$ lattice with Wilson gauge action at $\beta =5.90$. We project the low-lying modes of the lattice Dirac operator with the Lanczos thick-restart algorithm, and obtain the topological charge, the topological susceptibility (${\chi }_t$) and the second normalized cumulant ($c_4$). Our preliminary results of ${\chi }_t$ and $c_4$ agree with the sea-quark mass dependence predicted by the chiral perturbation theory.

Presentation materials

Slides

hsieh.pdf