50 citations · 432 across the 52 of their papers we have counts for
52 papers
Quantum-based solution of time-dependent complex Riccati equations
D. Martínez-Tibaduiza, C. González-Arciniegas, C. Farina +2
Using the Wei-Norman theory we obtain a time-dependent complex Riccati equation (TDCRE) as the solution of the time evolution operator (TEO) of quantum systems described by time-de…
Periodic strings: a mechanical analogy to photonic and phononic crystals
R. S. Pitombo, M. Vasconcellos, P. P. Abrantes +3
We study a periodic vibrating string composed of a finite sequence of string segments connected periodically, with each segment characterized by a constant linear mass density. The…
Two-photon spontaneous emission of an atom in a cosmic string background
Lucas Weitzel, Y. Muniz, C. Farina +1
It is well known that the vicinities of an atomic system may substantially affect its radiative properties. In this work, we consider the influence of a cosmic string background in…
Controlling the atom-sphere interaction with an external electric field
P. P. Abrantes, V. Pessanha, Reinaldo de Melo e Souza +1
We investigate the system constituted by a polarizable atom near a nanosphere under the influence of an external electrostatic field, showing that the attractive dispersive force b…
Optical forces on an oscillating dipole near VO phase transition
Daniela Szilard, Patrícia P. Abrantes, Felipe A. Pinheiro +3
We investigate optical forces on oscillating dipoles close to a phase-change vanadium dioxide (VO) film, which exhibits a metal-insulator transition around K and low ther…
Probing topological phase transitions via quantum reflection in the graphene family materials
P. P. Abrantes, Tarik P. Cysne, D. Szilard +3
We theoretically investigate the quantum reflection of different atoms by two-dimensional (2D) materials of the graphene family (silicene, germanene, and stanene), subjected to an…