Artículo
Abstract:
We study the graviton contribution and the topological effects of antipodal identification in constant curvature solutions of semiclassical Einstein equations. We analyze the curvature R as a function of the cosmological constant Γ, of the topology (labelled here by a discrete parameter σ), and of the trace anomaly λ, the mass m and the coupling ξ of quantum matter fields. For m=0, we find eight possible (some of them classically forbidden) configurations depending on the graviton-matter balance. Even if Γ>0, R can be negative and even if Γ≠0, R goes to zero when N (the number of matter fields) goes to infinity. For m≠0 we find five characteristic types of behaviours depending on the values of ξ and σ. The "back-reaction" effects of the topology appear more important for small ξ and increasing R. © 1987.
Registro:
| Documento: | Artículo |
| Título: | Graviton and topology contributions to self-consistent cosmology |
| Autor: | Castignino, M.A.; Paz, J.P.; Sánchez, N. |
| Filiación: | IAFE, Casilla de Corieo 67, Sucursal 28, 1428 Buenos Aires, Argentina CERN, CH-1211 Geneva 23, Switzerland |
| Año: | 1987 |
| Volumen: | 193 |
| Número: | 1 |
| Página de inicio: | 13 |
| Página de fin: | 22 |
| DOI: | http://dx.doi.org/10.1016/0370-2693(87)90448-5 |
| Título revista: | Physics Letters B |
| Título revista abreviado: | Phys Lett Sect B Nucl Elem Part High-Energy Phys |
| ISSN: | 03702693 |
| CODEN: | PYLBA |
| Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03702693_v193_n1_p13_Castignino |
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Citas:
---------- APA ----------
Castignino, M.A., Paz, J.P. & Sánchez, N. (1987) . Graviton and topology contributions to self-consistent cosmology. Physics Letters B, 193(1), 13-22.http://dx.doi.org/10.1016/0370-2693(87)90448-5
---------- CHICAGO ----------
Castignino, M.A., Paz, J.P., Sánchez, N. "Graviton and topology contributions to self-consistent cosmology" . Physics Letters B 193, no. 1 (1987) : 13-22.http://dx.doi.org/10.1016/0370-2693(87)90448-5
---------- MLA ----------
Castignino, M.A., Paz, J.P., Sánchez, N. "Graviton and topology contributions to self-consistent cosmology" . Physics Letters B, vol. 193, no. 1, 1987, pp. 13-22.http://dx.doi.org/10.1016/0370-2693(87)90448-5
---------- VANCOUVER ----------
Castignino, M.A., Paz, J.P., Sánchez, N. Graviton and topology contributions to self-consistent cosmology. Phys Lett Sect B Nucl Elem Part High-Energy Phys. 1987;193(1):13-22.http://dx.doi.org/10.1016/0370-2693(87)90448-5
