Determination of the chiral condensate from QCD Dirac spectrum on the lattice

被引：32

作者：

Fukaya, H. ^{[1
]}

Aoki, S. ^{[2
,3
]}

Chiu, T. W. ^{[4
,5
]}

Hashimoto, S. ^{[6
,7
]}

Kaneko, T. ^{[6
,7
]}

Noaki, J. ^{[6
]}

Onogi, T. ^{[1
]}

Yamada, N. ^{[6
,7
]}

机构：

[1] Osaka Univ, Dept Phys, Toyonaka, Osaka 5600043, Japan

[2] Univ Tsukuba, Grad Sch Pure & Appl Sci, Tsukuba, Ibaraki 3058571, Japan

[3] Univ Tsukuba, Ctr Computat Sci, Tsukuba, Ibaraki 3058577, Japan

[4] Natl Taiwan Univ, Ctr Quantum Sci & Engn, Taipei 10617, Taiwan

[5] Natl Taiwan Univ, Dept Phys, Taipei 10617, Taiwan

[6] High Energy Accelerator Res Org KEK, KEK Theory Ctr, Tsukuba, Ibaraki 3050801, Japan

[7] Grad Univ Adv Studies Sokendai, Sch High Energy Accelerator Sci, Tsukuba, Ibaraki 3050801, Japan

来源：

PHYSICAL REVIEW D | 2011年 / 83卷 / 07期

关键词：

EXACTLY MASSLESS QUARKS; PERTURBATION-THEORY; SYMMETRY; OPERATOR;

D O I：

10.1103/PhysRevD.83.074501

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

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.

引用

页数：16

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