Artículos de revistas
Collisional semiclassical approximations in phase-space representation
Fecha
1997-10-01Registro en:
Physical Review A. College Pk: American Physical Soc, v. 56, n. 4, p. 2825-2832, 1997.
1050-2947
10.1103/PhysRevA.56.2825
WOS:A1997YA78000049
WOSA1997YA78000049.pdf
Autor
Universidade Federal de São Carlos (UFSCar)
PONTIFICIA UNIV CATOLICA
Universidade Estadual Paulista (Unesp)
Institución
Resumen
The Gaussian wave-packet phase-space representation is used to show that the expansion in powers of a of the quantum Liouville propagator leads, in the zeroth-order term, to results close to those obtained in the statistical quasiclassical method of Lee and Scully in the Weyl-Wigner picture. It is also verified that, propagating the Wigner distribution along the classical trajectories, the amount of error is less than that coming from propagating the Gaussian distribution along classical trajectories.