Cold atomic gases have become a paradigmatic system for exploring fundamental physics,
which at the same time allows for applications in quantum technologies. The accelerating …

We theoretically investigate the stochastic decay of persistent currents in a toroidal ultracold
atomic superfluid caused by a perturbing barrier. Specifically, we perform detailed three …

We study the performance of permanent states (the bosonic counterpart of the Slater
determinant state) as approximating functions for bosons, with the intention to develop …

Numerical routines for Fock states indexing and to handle creation and annihilation
operators in the spanned multiconfigurational space are developed. From the combinatorial …

In the present thesis, the multiconfigurational time-dependent Hartree method is applied to
study flow properties of bosons trapped in annular geometry. This physical system provides …

Nesta tese, o método de Hartree multiconfiguracional dependente do tempo é aplicado para
estudar a circulaçao de bósons armadilhados em geometria anular. Este sistema fısico …