Non-perturbative renormalization of bilinear operators with dynamical overlap fermions - INSPIRE

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Non-perturbative renormalization of bilinear operators with dynamical overlap fermions

J. Noaki
(
- KEK, Tsukuba
)
,
T.W. Chiu
(
- Taiwan, Natl. Taiwan U.
)
,
H. Fukaya
(
- Nagoya U.
)
,
S. Hashimoto
(
- KEK, Tsukuba and
- Tsukuba, Graduate U. Adv. Studies
)
,
H. Matsufuru
(
- KEK, Tsukuba
)

Jul, 2009

37 pages

Published in:

Phys.Rev.D 81 (2010) 034502

e-Print:

0907.2751 [hep-lat]

DOI:

10.1103/PhysRevD.81.034502

Report number:

KEK-CP-224

View in:

ADS Abstract Service

reference search27 citations

Citations per year

Abstract: (arXiv)

Using the non-perturbative 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\times

32 or 16

^3\times

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

\epsilon

-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.

12.38.Gc
11.15.Ha
renormalization: nonperturbative
fermion: overlap
symmetry breaking: chiral
condensation: chiral
quark: mass
flavor: 3
flavor: 2
lattice field theory

References(29)

Figures(41)

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