Scattering amplitude from Bethe-Salpeter wave function inside the interaction range
High Energy Physics - Lattice
2018-08-09 v2
Abstract
We propose a method to calculate scattering amplitudes using the Bethe-Salpeter wave function inside the interaction range on the lattice. For an exploratory study of this method, we evaluate a scattering length of S-wave two pions by the use of the on-shell scattering amplitude. Our result is confirmed to be consistent with the value obtained from the conventional finite volume method. The half-off-shell scattering amplitude is also evaluated.
Cite
@article{arxiv.1712.10141,
title = {Scattering amplitude from Bethe-Salpeter wave function inside the interaction range},
author = {Yusuke Namekawa and Takeshi Yamazaki},
journal= {arXiv preprint arXiv:1712.10141},
year = {2018}
}
Comments
5 pages, 4 figures; published version