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Title

Unitary evolution in Gowdy cosmology

AuthorsCorichi, Alejandro; Cortez, Jerónimo; Mena Marugán, Guillermo A.
KeywordsQuantum gravity
Cosmology
Unitary symmetry
Space-time configurations
Issue Date6-Feb-2006
PublisherAmerican Physical Society
CitationPhysical Review D 73(4): 041502 (2006)
AbstractRecent results on the nonunitary character of quantum time evolution in the family of Gowdy T³ spacetimes bring the question of whether one should abandon the most sacred principle of unitary evolution in cosmology. In this work we show that the answer is in the negative. We put forward a full nonperturbative canonical quantization of the polarized Gowdy T³ model that implements the dynamics while preserving unitarity. We discuss possible implications of this result.
Description5 pages, no figures.-- PACS nrs.: 04.60.Ds; 04.60.Kz; 04.62.+v; 98.80.Qc.
Publisher version (URL)http://dx.doi.org/10.1103/PhysRevD.73.041502
URIhttp://hdl.handle.net/10261/12555
DOI10.1103/PhysRevD.73.041502
ISSN0556-2821
Appears in Collections:(CFMAC-IEM) Artículos
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