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Título: | Circular strings, wormholes, and minimum size |
Autor: | Garay, Luis Javier CSIC ORCID; González-Díaz, Pedro F. CSIC; Mena Marugán, Guillermo A. CSIC ORCID; Raya, José M. | Palabras clave: | minisuperspace models [PACS] Lower dimensional models [PACS] Properties of perturbation theory [PACS] Canonical quantization |
Fecha de publicación: | 1997 | Editor: | American Physical Society | Citación: | Physical Review D - Particles, Fields, Gravitation and Cosmology 55: 7872- 7877 (1997) | Resumen: | The quantization of circular strings in an anti-de Sitter background spacetime is performed, obtaining a discrete spectrum for the string mass. A comparison with a four-dimensional homogeneous and isotropic spacetime coupled to a conformal scalar field shows that the string radius and the scale factor have the same classical solutions and that the quantum theories of these two models are formally equivalent. However, the physically relevant observables of these two systems have different spectra, although they are related to each other by a specific one-to-one transformation. We finally obtain a discrete spectrum for the spacetime size of both systems, which presents a nonvanishing lower bound. © 1997 The American Physical Society | URI: | http://hdl.handle.net/10261/100778 | DOI: | 10.1103/PhysRevD.55.7872 | Identificadores: | doi: 10.1103/PhysRevD.55.7872 issn: 0556-2821 |
Aparece en las colecciones: | (CFMAC-IFF) Artículos |
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LJGaray.pdf | 141,39 kB | Adobe PDF | Visualizar/Abrir |
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