The nature of strongly interacting Fermi gases and magnetism is one of the most important
and studied topics in condensed-matter physics. Still, there are many open questions. A …

We consider the one-dimensional Hamiltonian with a V-shaped potential H 0= 1 2− d 2 dx
2+| x|, decorated with a point impurity of either δ-type, or local δ′-type or even nonlocal δ …

In this presentation, we wish to provide an overview of the spectral features for the self-
adjoint Hamiltonian of the three-dimensional isotropic harmonic oscillator perturbed by …

The spectrum and properties of quantum bound states is strongly dependent on the
dimensionality of space. How this comes about and how one may theoretically and …

We consider the spectrum of two ultracold harmonically trapped atoms interacting via short-
range interactions. The Green function approach is used to unify the two-and three …

We investigate few-boson systems with resonant interactions in a narrow harmonic trap
within an effective theory framework. The size of the model space is identified with the …

We decorate the one-dimensional conic oscillator $\frac {1}{2}\left [-\frac {d^{2}}{dx^{2}}+\left|
x\right|\right] $ with a point impurity of either $\delta $-type, or local $\delta'$-type or even …