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Abstract:

We evaluate the cross section for electron-positron pair production by a single high energy photon in the space-time of a static, straight cosmic string. Energy and momentum conservation precludes this process in empty Minkowski space. It happens around a cosmic string, in spite of the local flatness of the metric, as a consequence of the conical structure of space. Previous results based on a simplified model with scalar fields are here extended to the realistic QED case. Analytic expressions are found in three different regimes: near the threshold, at energies much larger than the electron rest mass M, and at ultrahigh energies, much larger than M, with the string mass per unit length in Planck units. © 1994 The American Physical Society.

Registro:

Documento: Artículo
Título:Quantum electrodynamics in the gravitational field of a cosmic string
Autor:Skarzhinsky, V.D.; Harari, D.D.; Jasper, U.
Filiación:P. N. Lebedev Physical Institute, Leninsky prospect 53, Moscow 117924, Russian Federation
Fakultät f̈r Physik, Universität Konstanz, Postfach 5560, D 78434 Konstanz, Germany
Departmento de Física, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, 1428 Buenos Aires, Argentina
Año:1994
Volumen:49
Número:2
Página de inicio:755
Página de fin:762
DOI: http://dx.doi.org/10.1103/PhysRevD.49.755
Título revista:Physical Review D
ISSN:05562821
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_05562821_v49_n2_p755_Skarzhinsky

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Citas:

---------- APA ----------
Skarzhinsky, V.D., Harari, D.D. & Jasper, U. (1994) . Quantum electrodynamics in the gravitational field of a cosmic string. Physical Review D, 49(2), 755-762.
http://dx.doi.org/10.1103/PhysRevD.49.755
---------- CHICAGO ----------
Skarzhinsky, V.D., Harari, D.D., Jasper, U. "Quantum electrodynamics in the gravitational field of a cosmic string" . Physical Review D 49, no. 2 (1994) : 755-762.
http://dx.doi.org/10.1103/PhysRevD.49.755
---------- MLA ----------
Skarzhinsky, V.D., Harari, D.D., Jasper, U. "Quantum electrodynamics in the gravitational field of a cosmic string" . Physical Review D, vol. 49, no. 2, 1994, pp. 755-762.
http://dx.doi.org/10.1103/PhysRevD.49.755
---------- VANCOUVER ----------
Skarzhinsky, V.D., Harari, D.D., Jasper, U. Quantum electrodynamics in the gravitational field of a cosmic string. 1994;49(2):755-762.
http://dx.doi.org/10.1103/PhysRevD.49.755