JLQCD ’ s dynamical overlap project

Exploring the chiral regime with dynamical overlap fermions

I report the status of the dynamical overlap fermion project by the JLQCD and TWQCD collaborations. So far, the simulations have been completed with two flavors of overlap sea quarks in a wide range of sea quark mass corresponding to the p-regime and the ε-regime on a 163 ×32 lattice at a =0.12 fm. More recently, runs with 2+1 flavors of sea quarks have also started. This talk mainly discusses ...

Light Meson Spectrum with N F = 2 Dynamical Overlap Fermions Light Meson Spectrum with N F = 2 Dynamical Overlap Fermions

JLQCD collaboration: J. Noaki∗,a†, S. Aokib, H. Fukayac, S. Hashimotoa,d T. Kanekoa,d, H. Matsufurua, T. Onogie, E. Shintania, N. Yamadaa,d a High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801, Japan b Graduate School of Pure and Applied Sciences, University of Tsukuba, Tsukuba 305-8571, Japan c Theoretical Physics Laboratory, RIKEN, Wako 351-0198, Japan d School of High Ener...

Three flavor dynamical QCD project by CP - PACS / JLQCD ∗

The chiral limit in lattice QCD

It has been a big challenge for lattice QCD to simulate dynamical quarks near the chiral limit. Theoretically, it is well-known that the naive chiral symmetry cannot be realized on the lattice (the Nielsen-Ninomiya theorem). Also practically, the computational cost rapidly grows as the quark mass is reduced. The JLQCD collaboration started a project to perform simulations with exact but modifie...

Mobility edge and locality of the overlap-Dirac operator with and without dynamical overlap fermions

JLQCD Collaboration: N. Yamada∗a,b† , S. Aokic,d , H. Fukayae, S. Hashimotoa,b, K-I. Ishikawa f , K. Kanayac, T. Kanekoa,b, H. Matsufurua, M. Okamotoa, T. Onogig aHigh Energy Accelerator Research Organization (KEK), Tsukuba 305-0801,Japan bSchool of High Energy Accelerator Science, The Graduate University for Advanced Studies (Sokendai), Tsukuba 305-0801, Japan cGraduate School of Pure and Appl...