24-30 July 2016
Highfield Campus, University of Southampton
Europe/London timezone

Properties of non-local wave function equivalent potential with generalized derivative expansion

28 Jul 2016, 17:30
20m
Building B2a Room 2065 (Highfield Campus, University of Southampton)

Building B2a Room 2065

Highfield Campus, University of Southampton

Talk Hadron Spectroscopy and Interactions Hadron Spectroscopy and Interactions

Speaker

Mr Takuya Sugiura (RCNP, Osaka University)

Description

HAL QCD collaboration has mostly considered the lowest order potential of the derivative expansion so far based on the assumption that higher order terms yield minor correction in low energy region. In this study, we aim at investigating the properties of HAL QCD's non-local potentials when the derivative expansion is explicitly performed to higher order. We report the result of our model calculation in a 1+1 dimensional coupled-channel system. We introduce a generalized version of the derivative expansion and show that the potential reproduces scattering phase shift quite well. The generalized expansion has some favorable features which is also applicable to the actual lattice QCD calculations. The possibility of improving the convergence of the expansion is also discussed in this framework.

Primary author

Mr Takuya Sugiura (RCNP, Osaka University)

Co-authors

Dr Keiko Murano (RCNP, Osaka University) Prof. Makoto Oka (Department of Physics, Tokyo Institute of Technology) Prof. Noriyoshi Ishii (RCNP, Osaka University)

Presentation Materials