Tunneling time through a barrier using the local value of a time operator


Autoria(s): Kobe, D. H.; Iwamoto, H.; Goto, M.; Aguilera-Navarro, V. C.
Contribuinte(s)

Universidade Estadual Paulista (UNESP)

Data(s)

20/05/2014

20/05/2014

01/08/2001

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