We measure the topological charge of the gauge configurations generated by lattice simulations of 2 flavors QCD on a 163×32 lattice, with Optimal Domain-Wall Fermion (ODWF) at Ns=16 and plaquette gauge action at β=5.90. Using the Adaptive Thick-Restart Lanczos algorithm, we project the low-lying modes of the 4D effective Dirac operator of ODWF, and obtain the topological charge and topological susceptibility. Our result of topological susceptibility agrees with the sea-quark mass dependence predicted by the chiral perturbation theory, and provides a determination of the chiral condensate.
@article{arxiv.1101.0402,
title = {Topological Charge in Two Flavors QCD with Optimal Domain-Wall Fermion},
author = {Tung-Han Hsieh and Ting-Wai Chiu and Yao-Yuan Mao},
journal= {arXiv preprint arXiv:1101.0402},
year = {2011}
}
Comments
7 pages, 3 figures, talk presented at the 28th International Symposium on Lattice Field Theory, Lattice 2010, June 14-19, 2010, Villasimius, Italy