Pade Unitarizations: A Critical Look

Details Pade Unitarizations: A Critical Look Pade Unitarizations: A Critical Look

2008-09-16

arxiv.org/abs/0809.2661v1

Nucl.Phys.Proc.Suppl.186:161-164,2009

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, 4 figures. To appear in the proceedings of QCD'08

Scientific paper

10.1016/j.nuclphysbps.2008.12.03

We use the Linear Sigma Model to test the convergence of different sequences
of Pade Approximants when used to unitarize the low energy pi-pi scattering
amplitude. We find that, in this particular case, diagonal sequences reproduce
the sigma pole with high accuracy, as opposed to other sequences that have been
discussed extensively.

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