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Lombardo, F.C.; Mazzitelli, F.D. "Influence functional in two-dimensional dilaton gravity" (1998) Physical Review D - Particles, Fields, Gravitation and Cosmology. 58(2)
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Abstract:

We evaluate the influence functional for two-dimensional models of dilaton gravity. This functional is exactly computed when conformal invariance is preserved, and it can be written as the difference between the Liouville actions on each closed-time-path branch plus a boundary term. From the influence action we derive the covariant form of the semiclassical field equations. We also study the quantum to classical transition in cosmological backgrounds. In the conformal case we show that the semiclassical approximation is not valid because there is no imaginary part in the influence action. Finally we show that the inclusion of the dilaton loop in the influence functional breaks conformal invariance and ensures the validity of the semiclassical approximation.

Registro:

Documento: Artículo
Título:Influence functional in two-dimensional dilaton gravity
Autor:Lombardo, F.C.; Mazzitelli, F.D.
Filiación:Departamento de Física, Fac. de Ciencias Exactas y Naturales, Universidad de Buenos Aires, 1428 Buenos Aires, Argentina
Año:1998
Volumen:58
Número:2
Título revista:Physical Review D - Particles, Fields, Gravitation and Cosmology
Título revista abreviado:Phys Rev D Part Fields Gravit Cosmol
ISSN:05562821
CODEN:PRVDA
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_05562821_v58_n2_p_Lombardo

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Citas:

---------- APA ----------
Lombardo, F.C. & Mazzitelli, F.D. (1998) . Influence functional in two-dimensional dilaton gravity. Physical Review D - Particles, Fields, Gravitation and Cosmology, 58(2).
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_05562821_v58_n2_p_Lombardo [ ]
---------- CHICAGO ----------
Lombardo, F.C., Mazzitelli, F.D. "Influence functional in two-dimensional dilaton gravity" . Physical Review D - Particles, Fields, Gravitation and Cosmology 58, no. 2 (1998).
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_05562821_v58_n2_p_Lombardo [ ]
---------- MLA ----------
Lombardo, F.C., Mazzitelli, F.D. "Influence functional in two-dimensional dilaton gravity" . Physical Review D - Particles, Fields, Gravitation and Cosmology, vol. 58, no. 2, 1998.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_05562821_v58_n2_p_Lombardo [ ]
---------- VANCOUVER ----------
Lombardo, F.C., Mazzitelli, F.D. Influence functional in two-dimensional dilaton gravity. Phys Rev D Part Fields Gravit Cosmol. 1998;58(2).
Available from: https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_05562821_v58_n2_p_Lombardo [ ]