Abstract:
The gravitational chiral anomaly makes possible the conversion of a Goldstone boson into a graviton in a background gravitational field. We show that the interaction Lagrangian for this process does not vanish if and only if the background metric has a nonvanishing Weyl tensor, i.e., if it is not conformally flat. No conversion takes place in an isotropic expanding universe. We evaluate the probability for the conversion of Goldstone bosons into gravitons in Bianchi type-I background metrics, the simplest anisotropic cosmological backgrounds. © 1990 The American Physical Society.
Registro:
Documento: |
Artículo
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Título: | Conversion of Goldstone bosons into gravitons in anisotropic cosmology |
Autor: | Harari, D.D.; Mazzitelli, F.D. |
Filiación: | Instituto de Astronomía Y Física del Espacio, Casilla de Correo 67, Sucursal 28, 1428 Buenos Aires, Argentina Departamento de Física, Facultad de Ciencias Exactas Y Naturales, Ciudad Universitaria, Pab. I, 1428 Buenos Aires, Argentina
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Año: | 1990
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Volumen: | 42
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Número: | 8
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Página de inicio: | 2632
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Página de fin: | 2637
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DOI: |
http://dx.doi.org/10.1103/PhysRevD.42.2632 |
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_v42_n8_p2632_Harari |
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Citas:
---------- APA ----------
Harari, D.D. & Mazzitelli, F.D.
(1990)
. Conversion of Goldstone bosons into gravitons in anisotropic cosmology. Physical Review D, 42(8), 2632-2637.
http://dx.doi.org/10.1103/PhysRevD.42.2632---------- CHICAGO ----------
Harari, D.D., Mazzitelli, F.D.
"Conversion of Goldstone bosons into gravitons in anisotropic cosmology"
. Physical Review D 42, no. 8
(1990) : 2632-2637.
http://dx.doi.org/10.1103/PhysRevD.42.2632---------- MLA ----------
Harari, D.D., Mazzitelli, F.D.
"Conversion of Goldstone bosons into gravitons in anisotropic cosmology"
. Physical Review D, vol. 42, no. 8, 1990, pp. 2632-2637.
http://dx.doi.org/10.1103/PhysRevD.42.2632---------- VANCOUVER ----------
Harari, D.D., Mazzitelli, F.D. Conversion of Goldstone bosons into gravitons in anisotropic cosmology. 1990;42(8):2632-2637.
http://dx.doi.org/10.1103/PhysRevD.42.2632