English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/12633
Share/Impact:
Statistics
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:
Title

Quantum Gowdy T3 model: a unitary description

AuthorsCorichi, Alejandro; Cortez, Jerónimo; Mena Marugán, Guillermo A.
Keywords[PACS] Canonical quantization (gravitation)
[PACS] Lower dimensional and minisuperspace models in quantum gravity
[PACS] Quantum field theory in curved spacetime
[PACS] Quantum cosmology
Issue Date19-Apr-2006
PublisherAmerican Physical Society
CitationPhysical Review D, 73 ( 8), id. 084020 (2006)
AbstractThe quantization of the family of linearly polarized Gowdy T3 spacetimes is discussed in detail, starting with a canonical analysis in which the true degrees of freedom are described by a scalar field that satisfies a Klein-Gordon type equation in a fiducial time-dependent background. A time-dependent canonical transformation, which amounts to a change of the basic (scalar) field of the model, brings the system to a description in terms of a Klein-Gordon equation on a background that is now static, although subject to a time-dependent potential. The system is quantized by means of a natural choice of annihilation and creation operators. The quantum time evolution is considered and shown to be unitary, so that both the Schrödinger and Heisenberg pictures can be consistently constructed. This has to be contrasted with previous treatments for which time evolution failed to be implementable as a unitary transformation. Possible implications for both canonical quantum gravity and quantum field theory in curved spacetime are noted.
Description17 pags.
Publisher version (URL)http://dx.doi.org/10.1103/PhysRevD.73.084020
URIhttp://hdl.handle.net/10261/12633
DOI10.1103/PhysRevD.73.084020
ISSN0556-2821
Appears in Collections:(CFMAC-IEM) Artículos
Files in This Item:
File Description SizeFormat 
Corichi.pdf228,97 kBAdobe PDFThumbnail
View/Open
Show full item record
 

Related articles:


WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.