| Revista: | Brazilian journal of physics |
| Base de datos: | PERIÓDICA |
| Número de sistema: | 000403405 |
| ISSN: | 0103-9733 |
| Autors: | Franca, H.M1 Gomes, G.G1 Parra, R.L1 |
| Institucions: | 1Universidade de Sao Paulo, Instituto de Fisica, Sao Paulo. Brasil |
| Any: | 2007 |
| Període: | Mar |
| Volum: | 37 |
| Número: | 1 |
| Paginació: | 13-16 |
| País: | Brasil |
| Idioma: | Inglés |
| Tipo de documento: | Artículo |
| Enfoque: | Analítico |
| Resumen en inglés | We make a brief review of the Kramers escape rate theory for the probabilistic motion of a particle in a potential well U(x), and under the influence of classical fluctuation forces. The Kramers theory is extended in order to take into account the action of the thermal and zero-point random electromagnetic fields on a charged particle. The result is physically relevant because we get a non null escape rate over the potential barrier at low temperatures (T → 0). It is found that, even if the mean energy is much smaller than the barrier height, the classical particle can escape from the potential well due to the action of the zero-point fluctuating fields. These stochastic effects can be used to give a classical interpretation to some quantum tunneling phenomena. Relevant experimental data are used to illustrate the theoretical results |
| Disciplines | Física y astronomía |
| Paraules clau: | Electromagnetismo, Mecánica cuántica, Efecto túnel, Electrodinámica |
| Keyword: | Physics and astronomy, Electromagnetism, Quantum mechanics, Tunneling, Electrodynamics |
| Text complet: | Texto completo (Ver PDF) |
