| Texto completo | |
| Autor(es): |
Ademir Luix Xavier Jr.
[1]
Número total de Autores: 1
|
| Afiliação do(s) autor(es): | [1] Salesian Universitary Center. Center for Research and Technology - Brasil
Número total de Afiliações: 1
|
| Tipo de documento: | Artigo Científico |
| Fonte: | Brazilian Journal of Physics; v. 31, n. 3, p. 461-467, 2001-09-00. |
| Resumo | |
A semiclassical formula for the coherent-state propagator requires the determination of specific classical paths inhabiting a complex phase-space and governed by a Hamiltonian flux. Such trajectories are constrained to special boundary conditions which render their determination difficult by common methods. In this paper we present a new method based on Runge-Kutta integrator for a quick, easy and accurate determination of these trajectories. Using nonlinear one dimensional systems we show that the semiclassical formula is highly accurate as compared to its exact counterpart. Further, we clarify how the phase of the semiclassical approximation is correctly retrieved during the time evolution. (AU) | |
| Processo FAPESP: | 00/03168-0 - Análise semiclássica de alguns sistemas quânticos na representação de estados coerentes |
| Beneficiário: | Ademir Luís Xavier Júnior |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |