From the 1 of 3 linked papers with an AI index.
3 papers
nucl-th2026
Search for the Double Poles of the Scattering Matrix in Light Nuclei
David Cardona Ochoa, Marek PÅoszajczak, Marek Płoszajczak +1
The authors use the coupled‑channel Gamow Shell Model to locate exceptional points—double poles of the scattering matrix—in light nuclei (⁶Li, ⁷Li, ⁷Be, ⁸Be) and examine how these…
nucl-th2026
Double pole -matrix singularity in the continuum of Be
David Cardona Ochoa, Marek PÅoszajczak, Nicolas Michel +1
The double pole singularity of the -matrix, the so-called exceptional point, associated with the doublet of resonances in the spectrum of Be has been identified in…
nucl-th2025
Gamow shell model description of exceptional point in Li
David Cardona Ochoa, Marek PÅoszajczak, Nicolas Michel
We report the first identification of an exceptional point (EP) within the Gamow Shell Model in the Coupled Channels representation (GSM-CC). In the spectrum of Li, an EP is…