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.
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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