148 citations · 179 across the 5 of their papers we have counts for
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Casimir force on a piston
R. M. Cavalcanti
We consider a massless scalar field obeying Dirichlet boundary conditions on the walls of a two-dimensional L x b rectangular box, divided by a movable partition (piston) into two…
Comment on ``Quantum mechanics of an electron in a homogeneous magnetic field and a singular magnetic flux tube''
R. M. Cavalcanti
Recently Thienel [Ann. Phys. (N.Y.) 280 (2000), 140; quant-ph/9809047] investigated the Pauli equation for an electron moving in a plane under the influence of a perpendicular magn…
Tunneling catastrophes of the partition function
C. A. A. de Carvalho, R. M. Cavalcanti
We use path-integrals to derive a general expression for the semiclassical approximation to the partition function of a one-dimensional quantum-mechanical system. Our expression de…
Exact Green's functions for delta-function potentials and renormalization in quantum mechanics
R. M. Cavalcanti
We present a simple recipe to construct the Green's function associated with a Hamiltonian of the form H=H_0+V, where H_0 is a Hamiltonian for which the associated Green's function…
On the effectiveness of Gamow's method for calculating decay rates
R. M. Cavalcanti, C. A. A. de Carvalho
We examine Gamow's method for calculating the decay rate of a wave function initially located within a potential well. Using elementary techniques, we examine a very simple, exactl…