Artículos de revistas
Limitations on the principle of stationary phase when it is applied to tunneling analysis
Registro en:
Physical Review A. Amer Physical Soc, v. 74, n. 6, 2006.
1050-2947
WOS:000243166700024
10.1103/PhysRevA.74.062111
Autor
Bernardini, AE
Institución
Resumen
Using a recently developed procedure-multiple wave packet decomposition-here we study the phase time formulation for tunneling or reflecting particles colliding with a potential barrier. To partially overcome the analytical difficulties which frequently arise when the stationary phase method is employed for deriving phase (tunneling) time expressions, we present a theoretical exercise involving a symmetrical collision between two identical wave packets and an one-dimensional rectangular potential barrier. Summing the amplitudes of the reflected and transmitted waves-using a method we call multiple peak decomposition-is shown to allow reconstruction of the scattered wave packets in a way which allows the stationary phase principle to be recovered. 74 6