Abstract:
The main thesis of this paper is that minisuperspace quantum cosmology reproduces the observer dependence of the vacuum found in quantum field theory in curved spacetime. We show that the vacua picked up by the Hartle-Hawking "no boundary" proposal in two different minisuperspaces sharing the same classical limit (k=0 and k=1 de Sitter minisuperspaces) are nonequivalent. A closer inspection suggests that the observer dependence is introduced through the choice of the Wick rotation. This hypothesis is supported by the analysis of the static de Sitter minisuperspace, where two different Euclidean sections are available, and where again two inequivalent vacua are obtained. These examples are not conclusive, but point to the possibility of a similar ambiguity even in full quantum cosmology. © 1993 The American Physical Society.
Registro:
Documento: |
Artículo
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Título: | Observer dependence in quantum cosmology |
Autor: | Calzetta, E.; Kandus, A. |
Filiación: | Instituto de Astronomía Y Física del Espacio, Casilla de Correos 67, Sucursal 28, 1428 Buenos Aires, Argentina Departamento de Física, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, 1428 Buenos Aires, Argentina
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Año: | 1993
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Volumen: | 48
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Número: | 8
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Página de inicio: | 3906
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Página de fin: | 3909
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DOI: |
http://dx.doi.org/10.1103/PhysRevD.48.3906 |
Título revista: | Physical Review D
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ISSN: | 05562821
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Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_05562821_v48_n8_p3906_Calzetta |
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Citas:
---------- APA ----------
Calzetta, E. & Kandus, A.
(1993)
. Observer dependence in quantum cosmology. Physical Review D, 48(8), 3906-3909.
http://dx.doi.org/10.1103/PhysRevD.48.3906---------- CHICAGO ----------
Calzetta, E., Kandus, A.
"Observer dependence in quantum cosmology"
. Physical Review D 48, no. 8
(1993) : 3906-3909.
http://dx.doi.org/10.1103/PhysRevD.48.3906---------- MLA ----------
Calzetta, E., Kandus, A.
"Observer dependence in quantum cosmology"
. Physical Review D, vol. 48, no. 8, 1993, pp. 3906-3909.
http://dx.doi.org/10.1103/PhysRevD.48.3906---------- VANCOUVER ----------
Calzetta, E., Kandus, A. Observer dependence in quantum cosmology. 1993;48(8):3906-3909.
http://dx.doi.org/10.1103/PhysRevD.48.3906