The quantum states in small, compact metal clusters are bunched into electronic shells with electronic orbitals resembling those in atoms, enabling classification of stable clusters as superatoms. The filling of superatomic orbitals, however, does not generally follow Hund's rule, and it has been proposed that magnetic superatoms can be stabilized by doping simple metal clusters with magnetic a...

We investigate the electronic structure of the beryllium atom subjected to a strong magnetic field in the regime 0 ≤ γ ≤ 10 a.u. The ground as well as many excited states of spin singlet, triplet and quintet multiplicity covering the magnetic quantum numbers |M | = 0, 1, 3, 6 for both positive and negative z−parity are discussed and analyzed. Total and one-particle ionization energies are prese...

The ground states of an abstract model in quantum field theory are investigated. By means of the asymptotic field theory, we give a necessary and sufficient condition for that the expectation value of the number operator of ground states is finite, from which we obtain a wide-usable method to estimate an upper bound of the multiplicity of ground states. Ground states of massless GSB models and ...

In this talk I shall discuss the clustering aspect and the shell model. I shall first discuss the α-cluster aspects based on the shell model calculations. Then I shall discuss the spin zero ground state dominance in the presence of random interactions and a new type of cluster structure for fermions in a single-j shell in the presence of only pairing interaction with the largest multiplicity.

Both the magnitude and alignment of the transferred angular momentum in the reaction Ho+ Ho have been measured as a function of Q value via continuum p-ray multiplicity and anisotropy techniques. Two regimes are observed: A low-Q-vaIue regime where the aligned angular momentum component dominates over the random components, and a large-Q-value regime where the random components dominate and dec...

The adiabatic description of molecular electronic states is based on potential energy surfaces, defined by the motion of the electrons, on which the slower nuclear motions (vibrations and rotations) occur. However, this model breaks down when relativistic effects such as the coupling between the electron spin and its orbital angular momentum (spin-orbit coupling) are taken into account. The res...

The quest for an approximate yet accurate kinetic energy density (KED) functional is central to the development of orbital-free theory. While a recipe closed-shell systems has been proposed earlier, we have shown that it cannot be naïvely extended open-shell atoms. In this present work, investigated efficacy ad-hoc compute densities atoms by extending methodology used systems. We also analysed ...