2003年1月
I=2 pion scattering phase shift with Wilson fermions
PHYSICAL REVIEW D
- 巻
- 67
- 号
- 1
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1103/PhysRevD.67.014502
- 出版者・発行元
- AMERICAN PHYSICAL SOC
We present a lattice QCD calculation of the scattering phase shift for the I=2 S-wave two-pion system using the finite size method proposed by Luscher. We work in the quenched approximation employing the standard plaquette action at beta=5.9 for gluons and the Wilson fermion action for quarks. The phase shift is extracted from the energy eigenvalues of the two-pion system, which are obtained by a diagonalization of the pion four-point function evaluated for a set of relative spatial momenta. In order to change the momentum of the two-pion system, calculations are carried out on 24(3)x60, 32(3)x60, and 48(3)x60 lattices. The phase shift is successfully calculated over the momentum range 0<p(2)<0.3 GeV2.
- リンク情報
- ID情報
-
- DOI : 10.1103/PhysRevD.67.014502
- ISSN : 0556-2821
- Web of Science ID : WOS:000180918100051