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Type: Artigo de periódico
Title: Limitations on the principle of stationary phase when it is applied to tunneling analysis
Author: Bernardini, AE
Abstract: 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.
Country: EUA
Editor: Amer Physical Soc
Rights: aberto
Identifier DOI: 10.1103/PhysRevA.74.062111
Date Issue: 2006
Appears in Collections:Unicamp - Artigos e Outros Documentos

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