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metadata.dc.type: | Artigo de Periódico |
Title: | Generalized bogoliubov transformation for confined fields: applications for the casimir effect |
Other Titles: | Physical Review A |
Authors: | Silva, J. C. da Khanna, Faqir C. Matos Neto, A. Santana, Ademir Eugênio de |
metadata.dc.creator: | Silva, J. C. da Khanna, Faqir C. Matos Neto, A. Santana, Ademir Eugênio de |
Abstract: | The Bogoliubov transformation in thermofield dynamics, an operator formalism for the finite-temperature quantum field theory, is generalized to describe a field in arbitrary confined regions of space and time. Starting with the scalar field, the approach is extended to the electromagnetic field and the energy-momentum tensor is written via the Bogoliubov transformation. In this context, the Casimir effect is calculated for zero and nonzero temperature, and therefore it can be considered as a vacuum condensation effect of the electromagnetic field. This aspect opens an interesting perspective for using this procedure as an effective scheme for calculations in the studies of confined fields, including interacting fields. |
URI: | http://www.repositorio.ufba.br/ri/handle/ri/7444 |
Issue Date: | Nov-2002 |
Appears in Collections: | Artigo Publicado em Periódico (FIS) |
Files in This Item:
File | Description | Size | Format | |
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e052101.pdf | 93,34 kB | Adobe PDF | View/Open |
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