Nonperturbative renormalization of bilinear operators with dynamical overlap fermions

被引：11

作者：

Noaki, J. ^{[1
]}

Chiu, T. W. ^{[2
,3
]}

Fukaya, H. ^{[4
]}

Hashimoto, S. ^{[1
,5
]}

Matsufuru, H. ^{[1
]}

Onogi, T. ^{[6
]}

Shintani, E. ^{[6
]}

Yamada, N. ^{[1
,5
]}

机构：

[1] High Energy Accelerator Res Org KEK, Tsukuba, Ibaraki 3050801, Japan

[2] Natl Taiwan Univ, Dept Phys, Ctr Quantum Sci & Engn, Taipei 10617, Taiwan

[3] Natl Taiwan Univ, Ctr Theoret Sci, Taipei 10617, Taiwan

[4] Nagoya Univ, Dept Phys, Nagoya, Aichi 4648602, Japan

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

[6] Kyoto Univ, Yukawa Inst Theoret Phys, Kyoto 6068502, Japan

来源：

PHYSICAL REVIEW D | 2010年 / 81卷 / 03期

关键词：

EXACTLY MASSLESS QUARKS;

D O I：

10.1103/PhysRevD.81.034502

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Using the nonperturbative renormalization technique, we calculate the renormalization factors for quark bilinear operators made of overlap fermions on the lattice. The background gauge field is generated by the JLQCD and TWQCD Collaborations, including dynamical effects of two or 2 + 1 flavors of light quarks on a 16(3) x 32 or 16(3) x 48 lattice at lattice spacing around 0.1 fm. By reducing the quark mass close to the chiral limit, where the finite volume system enters the so-called is an element of regime, the unwanted effect of spontaneous chiral symmetry breaking on the renormalization factors is suppressed. On the lattices in the conventional p regime, this effect is precisely subtracted by separately calculating the contributions from the chiral condensate.

引用

页数：22

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