71 citations · 335 across the 20 of their papers we have counts for
8 papers · 1 filter
A time-dependent harmonic oscillator with two frequency jumps: an exact algebraic solution
D. M. Tibaduiza, L. Pires, A. L. C. Rego +3
We consider a harmonic oscillator (HO) with a time dependent frequency which undergoes two successive abrupt changes. By assumption, the HO starts in its fundamental state with fre…
Repulsive van der Waals interaction between a quantum particle and a conducting toroid
P. P. Abrantes, Yuri França, Reinaldo de Melo e Souza +2
We calculate the non-retarded dispersion force exerted on an electrically polarizable quantum particle by a perfectly conducting toroid, which is one of the most common objects exh…
Characterizing critical exponents via Purcell effect
M. B. Silva-Neto, D. Szilard, F. S. S. Rosa +2
We investigate the role of phase transitions into the spontaneous emission rate of quantum emitters embedded in a critical medium. Using a Landau-Ginzburg approach, we find that, i…
The influence of a surface in the non-retarded interaction between two atoms
Reinaldo de Melo e Souza, W. J. M. Kort-Kamp, F. S. S. Rosa +1
In this work we obtain analytical expressions for the non-additivity effects in the dispersive interaction between two atoms and perfectly conducting surface of arbitrary shape in…
Tuning quantum fluctuations with an external magnetic field: Casimir-Polder interaction between an atom and a graphene sheet
T. Cysne, W. J. M. Kort-Kamp, D. Oliver +3
We investigate the dispersive Casimir-Polder interaction between a Rubidium atom and a suspended graphene sheet subjected to an external magnetic field B. We demonstrate that this…
Image method in the calculation of the van der Waals force between an atom and a conducting surface
Reinaldo de Melo e Souza, W. J. M. Kort-Kamp, C. Sigaud +1
Initially, we make a detailed historical survey of van der Waals forces, collecting the main references on the subject. Then, we review a method recently proposed by Eberlein and Z…