8 papers
Remarks on the conservation of mechanical energy in introductory mechanics
F C Santos, V Soares, A C Tort
We discuss the work-kinetic energy theorem and the mechanical energy conservation theorem in the context of general physics courses. The motivation is the fact that all modern text…
An alternative calculation of the Casimir energy for kappa-deformed electrodynamics
D Pinheiro, F C Santos, A. C. Tort
A simple, but effcient way of calculating regularized Casimir energies suitable for non-trivial frequency spectra is briefly described and applied to the case of a kappa-deformed s…
Casimir-Polder interaction in the presence of parallel walls
F. C. Santos, J. J. Passos Sobrinho, A. C. Tort
Making use of the quantum correlators associated with the Maxwell field vacuum distorted by the presence of plane parallel material surfaces we derive the Casimir-Polder interactio…
The Casimir energy of a massive fermion field revisited
F. C. Santos, A. C. Tort
We introduce a general, simple and effective method of evaluating the zero point energy of a quantum field under the influence of arbitrary boundary conditions imposed on the field…
Duality Transformations and temperature inversion symmetry
F C Santos, A C Tort
We argue that the temperature inversion symmetry present in the original Casimir setup and also in other Casimir systems for which symmetrical boundary conditions are imposed is no…
A Simple Model for the Non-Retarded Dispersive Force between an Electrically Polarizable Atom and a Magnetic Polarizable One
C. Farina, F. C. Santos, A. C. Tort
It is well known that for the case of two neutral but electrically polarizable atoms the consideration or not of retardation effects on the dispersive van der Waals force between t…