Quantum theory of time refraction

• Tipo: Artigo em Revista Científica Internacional
• Data: 2000

Autores

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

Revista

Título: Physical Review A

Vol. 62

Páginas: 1-4

ISSN: 2469-9926

Editora: American Physical Society

Indexação

ISI Web of Knowledge - 39 Citações

Scopus - 8 Citações

Classificação Científica

FOS: Ciências exactas e naturais > Física

Outras Informações

ID Authenticus: P-000-Z5V

Abstract (EN): The concept of time refraction is introduced to describe the effects of a sudden change of the optical properties of a dielectric medium. This can be seen as the most elementary process associated with photon acceleration and frequency upshifting. The quantum theory of such a process shows that the initial wave splits into time-transmitted and time-reflected waves propagating in opposite directions after the occurrence of a time discontinuity of the refractive index. The time refraction laws, analogous to the well known Fresnel formulas and Snell's law, are also derived. It is shown that, in quantum terms, time refraction is equivalent to a squeezing transformation. ©2000 The American Physical Society.

Idioma: Inglês

Tipo (Avaliação Docente): Científica