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Title: Hamiltonian Approach to the Dynamical Casimir Effect

A Hamiltonian approach is introduced in order to address some severe problems associated with the physical description of the dynamical Casimir effect at all times. For simplicity, the case of a neutral scalar field in a one-dimensional cavity with partially transmitting mirrors (an essential proviso) is considered, but the method can be extended to fields of any kind and higher dimensions. The motional force calculated in our approach contains a reactive term--proportional to the mirrors' acceleration - which is fundamental in order to obtain (quasi)particles with a positive energy all the time during the movement of the mirrors - while always satisfying the energy conservation law. Comparisons with other approaches and a careful analysis of the interrelations among the different results previously obtained in the literature are carried out.
Authors:
 [1] ;  [2]
  1. Departament de Matematica Aplicada I, Universitat Politecnica de Catalunya, Diagonal 647, 08028 Barcelona (Spain)
  2. Instituto de Ciencias del Espacio (CSIC) and Institut d'Estudis Espacials de Catalunya (IEEC/CSIC), Facultat de Ciencies, Universitat Autonoma de Barcelona, Torre C5-Parell-2a Planta, 08193 Bellaterra Barcelona (Spain)
Publication Date:
OSTI Identifier:
20860867
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review Letters; Journal Volume: 97; Journal Issue: 13; Other Information: DOI: 10.1103/PhysRevLett.97.130401; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ACCELERATION; CASIMIR EFFECT; COMPARATIVE EVALUATIONS; ENERGY CONSERVATION; HAMILTONIANS; ONE-DIMENSIONAL CALCULATIONS; QUASI PARTICLES; SCALAR FIELDS