43 citations · 80 across the 6 of their papers we have counts for
6 papers
Ermakov Systems with Multiplicative Noise
E. Cervantes-Lopez, P. B. Espinoza, A. Gallegos +1
Using the Euler-Maruyama numerical method, we present calculations of the Ermakov-Lewis invariant and the dynamic, geometric, and total phases for several cases of stochastic param…
Quantum polarization properties of two-mode energy eigenstates
Anita Sehat, Jonas Söderholm, Gunnar Björk +3
We show that any pure, two-mode, -photon state with odd or equal to two can be transformed into an orthogonal state using only linear optics. According to a recently suggest…
Ermakov-Lewis angles for one-parameter supersymmetric families of Newtonian free damping modes
H. C. Rosu, P. Espinoza
We apply the Ermakov-Lewis procedure to the one-parameter damped modes \tilde{y} recently introduced by Rosu and Reyes, which are related to the common Newtonian free damping modes…
Ermakov-Lewis dynamic invariants with some applications
Pedro B. Espinoza
Contents: Introduction(3).The method of Ermakov(4).The method of Milne(7). Pinney's result(8).Lewis' results(8). The interpretation of Eliezer and Gray(14). The connection of the E…
An Ermakov study of Q not zero EFRW minisuperspace oscillators
H. C. Rosu, P. Espinoza
A previous work on the Ermakov approach for empty FRW minisuperspace universes of Hartle-Hawking factor ordering parameter Q=0 is extended to the Q not zero cases
Ermakov approach for Q=0 empty FRW minisuperspace oscillators
H. C. Rosu, P. Espinoza, M. Reyes
The Wheeler-DeWitt equation for empty FRW minisuperspace universes of Hartle-Hawking factor ordering parameter Q=0 is mapped onto the dynamics of a unit mass classical oscillator.…