114 citations · 236 across the 8 of their papers we have counts for
8 papers
Negative time delay for wave reflection from a one-dimensional semi-harmonic well
Oscar Rosas-Ortiz, Sara Cruz y Cruz, Nicolas Fernandez-Garcia
It is reported that the phase time of particles which are reflected by a one-dimensional semi-harmonic well includes a time delay term which is negative for definite intervals of t…
Wronskian differential formula for confluent supersymmetric quantum mechanics
David Bermudez, David J. Fernandez C., Nicolas Fernandez-Garcia
A Wronskian differential formula, useful for applying the confluent second-order SUSY transformations to arbitrary potentials, will be obtained. This expression involves a parametr…
Rectangular Potentials in a Semi-Harmonic Background: Spectrum, Resonances and Dwell Time
Nicolás Fernández-García, Oscar Rosas-Ortiz
We study the energy properties of a particle in one dimensional semi-harmonic rectangular wells and barriers. The integration of energies is obtained by solving a simple transcende…
Extended WKB method, resonances and supersymmetric radial barriers
Nicolas Fernandez-Garcia, Oscar Rosas-Ortiz
Semiclassical approximations are implemented in the calculation of position and width of low energy resonances for radial barriers. The numerical integrations are delimited by t/T<…
A Primer on Resonances in Quantum Mechanics
O. Rosas-Ortiz, N. Fernandez-Garcia, Sara Cruz y Cruz
After a pedagogical introduction to the concept of resonance in classical and quantum mechanics, some interesting applications are discussed. The subject includes resonances occurr…
Optical potentials using resonance states in Supersymmetric Quantum Mechanics
N. Fernandez-Garcia, O. Rosas-Ortiz
Complex potentials are constructed as Darboux-deformations of short range, radial nonsingular potentials. They behave as optical devices which both refracts and absorbs light waves…