Nonperturbative renormalization of bilinear operators with dynamical overlap fermions
- High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801 (Japan)
- Physics Department, Center for Quantum Science and Engineering, and Center for Theoretical Sciences, National Taiwan University, Taipei 10617, Taiwan (China)
- Department of Physics, Nagoya University, Nagoya 464-8602 (Japan)
- Yukawa Institute for Theoretical Physics, Kyoto University, Kyoto 606-8502 (Japan)
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{sup 3}x32 or 16{sup 3}x48 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.
- OSTI ID:
- 21409188
- Journal Information:
- Physical Review. D, Particles Fields, Vol. 81, Issue 3; Other Information: DOI: 10.1103/PhysRevD.81.034502; (c) 2010 The American Physical Society; ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
Similar Records
Nonperturbative renormalization of composite operators with overlap fermions
Nonperturbative Renormalization of Composite Operators with Overlap Fermions
Related Subjects
CHIRAL SYMMETRY
CHIRALITY
COMPUTERIZED SIMULATION
CONDENSATES
D QUARKS
FLAVOR MODEL
MASS
PERTURBATION THEORY
RENORMALIZATION
SYMMETRY BREAKING
U QUARKS
COMPOSITE MODELS
FERMIONS
MATHEMATICAL MODELS
PARTICLE MODELS
PARTICLE PROPERTIES
QUARK MODEL
QUARKS
SIMULATION
SYMMETRY