2 papers
math.NA2026
On the Regularity and Interpolation of Coupled Cluster Amplitudes in Canonical Orbital Basis
Jonas Beck, Benjamin Stamm
Arguably the most widely used approaches for obtaining highly accurate molecular ground-state energies are coupled cluster methods. Despite introducing two layers of approximation,…
cond-mat.str-el2026
Kekulé order from diffuse nesting near higher-order Van Hove points
Jonas Beck, Jonathan Bodky, Matteo Dürrnagel +4
Translation symmetry-breaking order is assumed to be suppressed by the lack of Fermi surface nesting near certain higher-order Van Hove singularities (HOVHS). We show the anisotrop…