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Abstract:

In this paper we generalize the Stueckelberg formalism of flat spacetime to describe vector fields propagating in a Robertson-Walker spatially flat background. In the zero-mass limit of the regularized energy-momentum tensor we recover the usual vacuum-polarization terms of the massless Maxwell theory. Further on we investigate particle creation and the renormalizability of the energy-momentum tensor expectation value in the vacuum state which minimizes the metric Hamiltonian. In the massive case we found that the last one corresponds to that obtained through the Higgs mechanism and that it is not renormalizable in general. In the massless case we found that both quantities are finite and are in agreement with those in the literature obtained by different regularization methods, the resulting vacuum being the standard conformal one. © 1990 The American Physical Society.

Registro:

Documento: Artículo
Título:Energy-momentum tensor renormalization for vector fields in robertson-walker backgrounds
Autor:Chimento, L.P.; Cossarini, A.E.
Filiación:Departamento de Fisica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires PabellAn i, 1428 Buenos Aires, Argentina
Año:1990
Volumen:41
Número:10
Página de inicio:3101
Página de fin:3110
DOI: http://dx.doi.org/10.1103/PhysRevD.41.3101
Título revista:Physical Review D
ISSN:05562821
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_05562821_v41_n10_p3101_Chimento

Referencias:

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Citas:

---------- APA ----------
Chimento, L.P. & Cossarini, A.E. (1990) . Energy-momentum tensor renormalization for vector fields in robertson-walker backgrounds. Physical Review D, 41(10), 3101-3110.
http://dx.doi.org/10.1103/PhysRevD.41.3101
---------- CHICAGO ----------
Chimento, L.P., Cossarini, A.E. "Energy-momentum tensor renormalization for vector fields in robertson-walker backgrounds" . Physical Review D 41, no. 10 (1990) : 3101-3110.
http://dx.doi.org/10.1103/PhysRevD.41.3101
---------- MLA ----------
Chimento, L.P., Cossarini, A.E. "Energy-momentum tensor renormalization for vector fields in robertson-walker backgrounds" . Physical Review D, vol. 41, no. 10, 1990, pp. 3101-3110.
http://dx.doi.org/10.1103/PhysRevD.41.3101
---------- VANCOUVER ----------
Chimento, L.P., Cossarini, A.E. Energy-momentum tensor renormalization for vector fields in robertson-walker backgrounds. 1990;41(10):3101-3110.
http://dx.doi.org/10.1103/PhysRevD.41.3101