Observer dependence in quantum cosmology
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...
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1993
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| Acceso en línea: | Registro en Scopus DOI Handle Registro en la Biblioteca Digital |
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| LEADER | 04983caa a22006377a 4500 | ||
|---|---|---|---|
| 001 | PAPER-131 | ||
| 003 | AR-BaUEN | ||
| 005 | 20230518202931.0 | ||
| 008 | 190411s1993 xx ||||fo|||| 00| 0 eng|d | ||
| 024 | 7 | |2 scopus |a 2-s2.0-35949004806 | |
| 040 | |a Scopus |b spa |c AR-BaUEN |d AR-BaUEN | ||
| 100 | 1 | |a Calzetta, E. | |
| 245 | 1 | 0 | |a Observer dependence in quantum cosmology |
| 260 | |c 1993 | ||
| 270 | 1 | 0 | |m Calzetta, E.; Instituto de Astronomía Y Física del Espacio, Casilla de Correos 67, Sucursal 28, 1428 Buenos Aires, Argentina |
| 506 | |2 openaire |e Política editorial | ||
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| 520 | 3 | |a 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. |l eng | |
| 593 | |a Instituto de Astronomía Y Física del Espacio, Casilla de Correos 67, Sucursal 28, 1428 Buenos Aires, Argentina | ||
| 593 | |a Departamento de Física, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, 1428 Buenos Aires, Argentina | ||
| 700 | 1 | |a Kandus, A. | |
| 773 | 0 | |d 1993 |g v. 48 |h pp. 3906-3909 |k n. 8 |x 05562821 |w (AR-BaUEN)CENRE-394 |t Physical Review D | |
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| 856 | 4 | 0 | |u https://doi.org/10.1103/PhysRevD.48.3906 |y DOI |
| 856 | 4 | 0 | |u https://hdl.handle.net/20.500.12110/paper_05562821_v48_n8_p3906_Calzetta |y Handle |
| 856 | 4 | 0 | |u https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_05562821_v48_n8_p3906_Calzetta |y Registro en la Biblioteca Digital |
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