期刊
PHYSICAL REVIEW D
卷 83, 期 7, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.83.074501
关键词
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资金
- Japanese Ministry of Education [20340047, 20105001, 20105002, 20105003, 20105005, 21684013, 22011012, 22740183]
- National Science Council [NSC96-2112-M-002-020-MY3, NSC99-2112-M-002-012-MY3]
- NTU-CQSE [99R80869, 99R80873]
- IBM System Blue Gene Solution at High Energy Accelerator Research Organization (KEK) [09-05]
- Grants-in-Aid for Scientific Research [20340047, 22740183, 21684013, 20105005, 22011012, 21674002, 20105002] Funding Source: KAKEN
We calculate the chiral condensate of QCD with 2, 2 + 1, and 3 flavors of sea quarks. Lattice QCD simulations are performed employing dynamical overlap fermions with up-and down-quark masses covering a range between 3 and 100 MeV. On L similar to 1: 8-1: 9 fm lattices at a lattice spacing similar to 0.11 fm, we calculate the eigenvalue spectrum of the overlap-Dirac operator. By matching the lattice data with the analytical prediction from chiral perturbation theory at the next-to-leading order, the chiral condensate in the massless limit of up and down quarks is determined.
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