67 citations · 118 across the 18 of their papers we have counts for
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Jacobi equations using a variational principle
H. N. Núñez-Yépez, A. L. Salas-Brito
A variational principle is proposed for obtaining the Jacobi equations in systems admitting a Lagrangian description. The variational principle gives simultaneously the Lagrange eq…
Recurrence relation for relativistic atomic matrix elements
R P Martínez-y-Romero, H N Núñez-Yépez, A L Salas-Brito
Recurrence formulae for arbitrary hydrogenic radial matrix elements are obtained in the Dirac form of relativistic quantum mechanics. Our approach is inspired on the relativistic e…
Simple quantum systems in the momentum representation
H. N. Núñez-Yépez, E. Guillaumín-España, R. P. Martínez-y-Romero +1
The momentum representation is seldom used in quantum mechanics courses. Some students are thence surprised by the change in viewpoint when, in doing advanced work, they have to us…