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Abstract:

The point-splitting method of regularization is applied to alternative Hadamard kernels, for scalar fields in curved backgrounds, in order to study the polarization term in the vacuum expectation value (VEV) of the energy-momentum tensor. An ansatz to define this term is introduced and verified in several cases. The renormalized VEV of the energy-momentum tensor of a scalar massive conformally coupled field in a Robertson-Walker universe is explicitly computed. Two terms appear, the polarization term, which coincides with the one computed using the above-mentioned ansatz, and a creation of particle term. © 1987 American Institute of Physics.

Registro:

Documento: Artículo
Título:Vacuum polarization in curved backgrounds deduced from Hadamard kernels
Autor:Castagnino, M.A.; Harari, D.D.; Núñez, C.A.
Filiación:Instituto de Física de Rosario, Av. Pellegrini 250, 2000 Rosario, Argentina
Instituto de Astronomía Y Física del Espacio, Casilla de Correo 67 -Sucursal 28, 1428 Buenos Aires, Argentina
Año:1987
Volumen:28
Número:1
Página de inicio:184
Página de fin:192
DOI: http://dx.doi.org/10.1063/1.527787
Título revista:Journal of Mathematical Physics
ISSN:00222488
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00222488_v28_n1_p184_Castagnino

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Citas:

---------- APA ----------
Castagnino, M.A., Harari, D.D. & Núñez, C.A. (1987) . Vacuum polarization in curved backgrounds deduced from Hadamard kernels. Journal of Mathematical Physics, 28(1), 184-192.
http://dx.doi.org/10.1063/1.527787
---------- CHICAGO ----------
Castagnino, M.A., Harari, D.D., Núñez, C.A. "Vacuum polarization in curved backgrounds deduced from Hadamard kernels" . Journal of Mathematical Physics 28, no. 1 (1987) : 184-192.
http://dx.doi.org/10.1063/1.527787
---------- MLA ----------
Castagnino, M.A., Harari, D.D., Núñez, C.A. "Vacuum polarization in curved backgrounds deduced from Hadamard kernels" . Journal of Mathematical Physics, vol. 28, no. 1, 1987, pp. 184-192.
http://dx.doi.org/10.1063/1.527787
---------- VANCOUVER ----------
Castagnino, M.A., Harari, D.D., Núñez, C.A. Vacuum polarization in curved backgrounds deduced from Hadamard kernels. 1987;28(1):184-192.
http://dx.doi.org/10.1063/1.527787