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Abstract:

We describe vector fields propagating in a two-dimensional spatially flat Robertson-Walker background using a curved space-time generalization of the Stueckelberg formalism. We prove that the energy-momentum tensor expectation value in the vacuum defined through energy minimization is renormalizable and yields the usual anomalous trace in the massless limit of vector mesons. Further on we study the back-reaction problem using the semiclassical Einstein equations. In the massive case we found that the physical solution requires the cosmological constant to vanish but not necessarily with a vanishing curvature. However, for certain initial conditions of the scale factor, the de Sitter metric is a consistent solution with the cosmological constant depending on powers of the curvature scalar greater than one. In addition, matter is continuously being created at a steady state. © 1992.

Registro:

Documento: Artículo
Título:Self-consistent solution to the back-reaction problem for vector fields in two dimensions
Autor:Chimento, L.P.; Cossarini, A.E.
Filiación:Departamento de Física, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Pabellon I, 1428 Buenos Aires, Argentina
Año:1992
Volumen:373
Número:2
Página de inicio:438
Página de fin:452
DOI: http://dx.doi.org/10.1016/0550-3213(92)90439-I
Título revista:Nuclear Physics, Section B
Título revista abreviado:Nucl. Phys. B
ISSN:05503213
CODEN:NUPBB
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_05503213_v373_n2_p438_Chimento

Referencias:

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Citas:

---------- APA ----------
Chimento, L.P. & Cossarini, A.E. (1992) . Self-consistent solution to the back-reaction problem for vector fields in two dimensions. Nuclear Physics, Section B, 373(2), 438-452.
http://dx.doi.org/10.1016/0550-3213(92)90439-I
---------- CHICAGO ----------
Chimento, L.P., Cossarini, A.E. "Self-consistent solution to the back-reaction problem for vector fields in two dimensions" . Nuclear Physics, Section B 373, no. 2 (1992) : 438-452.
http://dx.doi.org/10.1016/0550-3213(92)90439-I
---------- MLA ----------
Chimento, L.P., Cossarini, A.E. "Self-consistent solution to the back-reaction problem for vector fields in two dimensions" . Nuclear Physics, Section B, vol. 373, no. 2, 1992, pp. 438-452.
http://dx.doi.org/10.1016/0550-3213(92)90439-I
---------- VANCOUVER ----------
Chimento, L.P., Cossarini, A.E. Self-consistent solution to the back-reaction problem for vector fields in two dimensions. Nucl. Phys. B. 1992;373(2):438-452.
http://dx.doi.org/10.1016/0550-3213(92)90439-I