Giraldo Zuluaga, Alberto L. (2016) Efecto Casimir dinámico para medios semitransparentes. / Dynamical Casimir effect for semitransparent mirrors. Maestría en Ciencias Físicas, Universidad Nacional de Cuyo, Instituto Balseiro.
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Resumen en español
La imposición de condiciones de borde no estacionarias a campos cuánticos puede llevar a la aparición de fenómenos disipativos. En este trabajo estudiaremos aquellos asociados a condiciones de borde en movimiento implementadas por espejos semitransparentes, en los casos de movimiento normal oscilatorio y movimiento lateral con velocidad constante. Encontraremos en cada caso la acción efectiva para un campo escalar real sujeto a las condiciones de borde mencionadas, y encontraremos la parte imaginaría de dicha acción efectiva. Mostraremos que para que esta sea no nula, cierto tipo de condiciones deben ser satisfechas. Estas van a estar relacionadas con la producción de partículas reales en el caso oscilatorio, o con la respuesta de los grados de libertad microscópicos de los espejos en el caso del movimiento lateral. Por lo tanto la aparición de una parte imaginaria en la acción efectiva puede relacionarse con la aparición de fenómenos disipativos.
Resumen en inglés
Imposing non-stationary boundary conditions on quantum fields will generate disipative effects. In this work, we study those associated with moving boundary conditions corresponding to semitransparent mirrors in two different situations: Normal oscillatory motion and sidewise motion at constant velocity. In both cases we construct the effective action for a real scalar field, and evaluate the conditions for a non-vanishing imaginary part of the effective action. This will be an indicator of the creation of real particles in the case of normal oscillatory motion, and of the response of microscopic degrees of freedom of the mirror, in the case of lateral motion. Both mechanisms are responsible of the ocurrence of dissipative effects.
| Tipo de objeto: | Tesis (Maestría en Ciencias Físicas) |
|---|---|
| Información Adicional: | Área Temática: Teoría cuántica de campos. |
| Palabras Clave: | Casimir effect; Efecto casimir; [Dynamical Casimir effect; Efecto Casimir dinámico; Zero point energy; Energía de vacío; Effective action; Integral funcional; Geldfand-Yaglon theorem; Teorema de Gelfand-Yaglom; Quantum friction; Fricción cuántica] |
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| Materias: | Física |
| Divisiones: | Investigación y aplicaciones no nucleares > Física > Partículas y campos |
| Código ID: | 596 |
| Depositado Por: | Tamara Cárcamo |
| Depositado En: | 02 May 2017 16:45 |
| Última Modificación: | 02 May 2017 16:45 |
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