3 papers
stat.ME2026
Graphical Models for Multivariate Count Data
Iza Danielewska, Bartosz Kołodziejek
The classical multinomial, negative multinomial, hypergeometric, and negative hypergeometric distributions are naturally organized by two features of the sampling scheme: sampling…
nlin.PS2026
A resonance in phonons scattering off a kink in the absence of a Peierls-Nabarro potential
Danial Saadatmand, Arpine Piloyan, David Amundsen +1
We investigate the interaction of small-amplitude waves called phonons, with an initially static kink in an exceptional discretization of the model that is free of the Peierl…
hep-th2026
Long-time behaviour of sphalerons in models with a false vacuum
Stephen C. Anco, Danial Saadatmand
Evolution of sphalerons in a class of quartic Klein-Gordon models are studied under a growing perturbation. Sphalerons are unstable lump-like solutions that arise from a saddle poi…