4 citations · 7 across the 9 of their papers we have counts for
3 papers · 1 filter
Effective Hamiltonians for Ge/Si core/shell nanowires from higher order perturbation theory
Sebastian Miles, A. Mert Bozkurt, Dániel Varjas +1
We theoretically explore the electronic structure of holes in cylindrical Germanium/Silicon core/shell nanowires using a perturbation theory approach. The approach yields a set of…
Non-unitary Time Evolution via the Chebyshev Expansion Method
Áron Holló, Dániel Varjas, Cosma Fulga +2
The Chebyshev expansion method is a well-established technique for computing the time evolution of quantum states, particularly in Hermitian systems with a bounded spectrum. Here,…
Multifold degeneracy points of quantum systems and singularities of matrix varieties
György Frank, András Pályi, Gergő Pintér +1
Parameter-dependent quantum systems often exhibit energy degeneracy points, whose comprehensive description naturally lead to the application of methods from singularity theory. A…