On the Magnetic Laplacian with a Piecewise Constant Magnetic Field in. R3

EL Giacomelli - Quantum Mathematics I, 2023 - Springer
We study a Schrödinger operator in. R3+:={x∈ R3| x=(x1, x2, x3), x2> 0} with a magnetic
field admitting a piecewise constant strength and a uniform direction. We review some …

Decay properties of zero-energy resonances of multi-particle Schr\"odinger operators and why the Efimov effect does not exist for systems of particles

S Barth, A Bitter, S Vugalter - arxiv preprint arxiv:1910.04139, 2019 - arxiv.org
We consider $ N $-body Schr\" odinger operators with a virtual level at the threshold of the
essential spectrum. We show that in the case of $ N\geq 3$ particles in dimension $ n\geq3 …

Quantum systems at the brink

D Hundertmark, M Jex, M Lange - INdAM Meeting: Quantum Mathematics …, 2022 - Springer
We present a method to calculate the asymptotic behavior of eigenfunctions of Schrödinger
operators that also works at the threshold of the essential spectrum. It can be viewed as a …

Decay rates of bound states at the spectral threshold of multi-particle Schrödinger operators

S Barth, A Bitter - Documenta mathematica, 2020 - content.ems.press
We consider N-body Schrödinger operators with N≥ 3 quantum particles interacting via
short-range potentials in dimension d≥ 3, where the essential spectrum coincides with the …

[PDF][PDF] Virtual levels of multi-particle quantum systems and their implications for the Efimov effect

A Bitter - 2020 - elib.uni-stuttgart.de
In this thesis we investigate Schrödinger operators corresponding to N-particle quantum
systems in dimension d≥ 3. First, we study the lower spectral threshold of the essential …

[PDF][PDF] systems of N≥ 4particles

S Barth, A Bitter, S Vugalter - waves.kit.edu
We consider N-body Schrödinger operators with a virtual level at the threshold of the
essential spectrum. We show that in the case of N≥ 3 particles in dimension n≥ 3 virtual …

[CITATION][C] Bound States at Brink of Theirs Existence