Tunneling time through a barrier using the local value of a time operator
Contribuinte(s) |
Universidade Estadual Paulista (UNESP) |
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Data(s) |
20/05/2014
20/05/2014
01/08/2001
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Resumo |
A time for a quantum particle to traverse a barrier is obtained for stationary states by setting the local value of a time operator equal to a constant. This time operator, called the tempus operator because it is distinct from the time of evolution, is defined as the operator canonically conjugate to the energy operator. The local value of the tempus operator gives a complex time for a particle to traverse a barrier. The method is applied to a particle with a semiclassical wave function, which gives, in the classical limit, the correct classical traversal time. It is also applied to a quantum particle tunneling through a rectangular barrier. The resulting complex tunneling time is compared with complex tunneling times from other methods. |
Formato |
8 |
Identificador |
http://dx.doi.org/10.1103/PhysRevA.64.022104 Physical Review A. College Pk: American Physical Soc, v. 64, n. 2, 8 p., 2001. 1050-2947 http://hdl.handle.net/11449/23348 10.1103/PhysRevA.64.022104 WOS:000170297300014 WOS000170297300014.pdf |
Idioma(s) |
eng |
Publicador |
American Physical Soc |
Relação |
Physical Review A |
Direitos |
closedAccess |
Tipo |
info:eu-repo/semantics/article |