Hadron interactions from lattice QCD
| dc.creator | Aoki, Sinya | |
| dc.date | 2007-11-14 | |
| dc.date.accessioned | 2026-07-07T13:02:55Z | |
| dc.date.available | 2026-07-07T13:02:55Z | |
| dc.description | Studies on hadron interactions from lattice QCD are reviewed. The $S$-wave $ππ$ scattering lengths of the I=0 and I=2 channels are extracted from various lattice determinations of low energy constants in $N_f=2$ chiral perturbation theory. The results agree with each other and agree also with other non-lattice estimates. Recently the $P$-wave $ππ$ scattering phase shift for the I=1 channel has been calculated. A preliminary estimate of the $ρ$ meson decay width from the phase shift is consistent with the experimental value. Two approaches to potentials between hadrons are discussed. One is a method using static quarks to define the distance between two hadrons. The other is a method to define a potential from a wave function of two hadrons. An application of the latter to the nucleon-nucleon ($NN$) potential turns out to reproduce qualitative features of the phenomenological $NN$ potential such as attraction at long distance and repulsion at short distance. Theoretical issues of this approach are also discussed. | |
| dc.description | 15 pages, 10 figures, Plenary talk presented at the XXVth International Symposium on Lattice Field Theory, July 30 - August 4, 2007, Regensburg, Germany | |
| dc.identifier | https://arxiv.org/abs/0711.2151 | |
| dc.identifier | http://arxiv.org/abs/0711.2151 | |
| dc.identifier | PoSLAT2007:002,2007 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/226618 | |
| dc.subject | High Energy Physics - Lattice | |
| dc.subject | Nuclear Theory | |
| dc.title | Hadron interactions from lattice QCD | |
| dc.type | text |