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Phys. Rev. D 73, 041502(R) (2006) [5 pages]

Unitary evolution in Gowdy cosmology

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Alejandro Corichi1,2, Jerónimo Cortez3, and Guillermo A. Mena Marugán3
1Instituto de Matemáticas, UNAM, Apartado Postal 61-3, Morelia, Michoacan 58090, Mexico
2Instituto de Ciencias Nucleares, UNAM, Apartado Postal 70-543, Mexico D.F. 04510, Mexico
3Instituto de Estructura de la Materia, CSIC, Serrano 121, 28006 Madrid, Spain

Received 27 October 2005; published 6 February 2006

Recent 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.

© 2006 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevD.73.041502
DOI:
10.1103/PhysRevD.73.041502
PACS:
04.60.Ds, 04.60.Kz, 04.62.+v, 98.80.Qc
 
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