American University in Bulgaria

Local variations of the magnetization effected by an external field in molecular rings

It is shown that an external magnetic field generates local variations of the classical ground-state magnetization in molecular rings of antiferromagnetic icosahedra with isotropic spin interactions. The magnetic response is characterized by a multitude of magnetization and susce...

Taylor Recurrences and Coulomb-Corrected Asymptotics for the Schrödinger–Newton Ground State

We study the positive, radial ground-state profile of the stationary Schrödinger–Newton system in the fixed-energy normalization μ=1 with V(∞)=0. Using regularity and radial symmetry of solutions, we derive convergent even Taylor expansions for the wave function and Newtonian pot...