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|Type:||Artigo de periódico|
|Title:||Semiclassical approximations to the coherent-state propagator for a particle in a box|
|Abstract:||We compute the semiclassical coherent-state propagator for a particle moving in a one-dimensional box. In this semiclassical approach complex trajectories are stationary paths of the propagator's asymptotic expansion and play a fundamental role. A second semiclassical approximation is also introduced, which makes use of real trajectories only. An application to a seemingly simple system, the infinite well, is carried out completely for the diagonal elements, and a comparison is made among the three possible methods, those based on complex and real trajectories and the 'exact case' that is determined by decomposing the propagator into its eigenstates.|
|Editor:||American Physical Soc|
|Citation:||Physical Review A. American Physical Soc, v. 54, n. 3, n. 1808, n. 1819, 1996.|
|Appears in Collections:||Unicamp - Artigos e Outros Documentos|
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