Bonn 2020 – wissenschaftliches Programm
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HK 27.5: Vortrag
Mittwoch, 1. April 2020, 15:15–15:30, J-HS H
Resonances and virtual states in 3n systems — •Sebastian Dietz1, Sebastian König1,2,3, and Hans-Werner Hammer1,2 — 1IKP, TU Darmstadt — 2EMMI, GSI Darmstadt — 3North Carolina State University, Raleigh, NC, USA
We present the analytical continuation of the three-neutron (3n) T-matrix to the unphysical sheets searching for resonances and virtual states. Based on explicit as well as implicit contour deformations of the corresponding Faddeev equation in momentum space we will explore the 3n pole trajectory as a function of the two-neutron interaction strength and show the accessible energy regions. Results are presented for a two-neutron interaction represented by a Yamaguchi potential as well as an interaction derived from pionless effective field theory.
* Funded by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) * Projektnummer 279384907 * SFB 1245