2 papers
quant-ph2005
Levinson's theorem and reflectionless one-dimensional potentials
D. E. Zambrano
We studied two possible approaches to one-dimensional Levinson's theorem for Schödinger equation. The first one, we restrict the 3-dimensional theorem. The other one, the theorem p…
math-ph2005
Some aspects about semiclassical electrodynamics and gauge transformations
J. A. Sanchez, J. Morales, D. E. Zambrano
We describe the behaviour of semiclassical electrodynamics under gauge transformations. For this purpose we observe the structure of Schrödinger equation and matricial elements und…