Time refraction and the quantum properties of vacuum

• Tipo: Artigo em Revista Científica Internacional
• Data: 2005

Autores

Mendonca, JT (Autor) Outra; Guerreiro, A (Autor) FCUP

Revista

Título: Physical Review A - Atomic, Molecular, and Optical Physics

Vol. 72

ISSN: 1050-2947

Editora: American Physical Society

Indexação

ISI Web of Knowledge - 38 Citações

Scopus - 39 Citações

Classificação Científica

FOS: Ciências exactas e naturais > Física

Outras Informações

ID Authenticus: P-000-0C8

DOI: 10.1103/physreva.72.063805

Abstract (EN): We present the classical and quantum theory of time refraction in a generic nonstationary medium. The classical approach leads to expressions for the temporal refraction coefficient, and the temporal Fresnel laws are given. The quantum formulation leads to the derivation of instantaneous Bogoliubov transformations and the evaluation of the number of photon pairs created from vacuum by the temporal changes in the medium. The influence of boundary conditions, the connection of this model with the dynamical Casimir effect, and radiation from superluminal nonaccelerated optical boundaries is also discussed.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 8