Relativistic tunneling through two successive barriers
- Grupo de Fisica Teorica e Modelagem Matematica, Departamento de Matematica e Estatistica, Universidade Estadual de Ponta Grossa, Avenida General Carlos Cavalcanti, 4748, CEP 84032-900, Ponta Grossa, PR (Brazil)
- Department of Physics and Astronomy, Macalester College, 1600 Grand Avenue, Saint Paul, Minnesota 55105 (United States)
We study the relativistic quantum mechanical problem of a Dirac particle tunneling through two successive electrostatic barriers. Our aim is to study the emergence of the so-called generalized Hartman effect, an effect observed in the context of nonrelativistic tunneling as well as in its counterparts and which is often associated with the possibility of superluminal velocities in the tunneling process. We discuss the behavior of both the phase (or group) tunneling time and the dwell time, and show that in the limit of opaque barriers the relativistic theory also allows the emergence of the generalized Hartman effect. We compare our results with the nonrelativistic ones and discuss their interpretation.
- OSTI ID:
- 21020653
- Journal Information:
- Physical Review. A, Vol. 76, Issue 4; Other Information: DOI: 10.1103/PhysRevA.76.042111; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1050-2947
- Country of Publication:
- United States
- Language:
- English
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