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Abstract:

We show that many elementary particle physics processes, such as pair production by a high energy photon, that take place in Minkowski space only if a non-uniform external field provides for momentum non-conservation, do occur in the space-time around a straight cosmic string, even though the space is locally flat and there is no local gravitational potential. We exemplify this mechanism through the evaluation of the cross section per unit length of string for the decay of a massless scalar particle into a pair of massive particles. The cross sections for this kind of processes are typically small. Nevertheless, it is interesting to realize how these reactions occur due to topological properties of space, rather than to the action of a local field. © 1990.

Registro:

Documento: Artículo
Título:Pair production in the gravitational field of a cosmic string
Autor:Harari, D.D.; Skarzhinsky, V.D.
Filiación:Instituto de Astronomia y Fisica del Espacio, Casilla de Correo 67, Sucursal 28, 1428 Buenos Aires, Argentina
P.N. Lebedev Physical Institute, SU-117 924 Moscow, Russian Federation
Año:1990
Volumen:240
Número:3-4
Página de inicio:322
Página de fin:326
DOI: http://dx.doi.org/10.1016/0370-2693(90)91106-L
Título revista:Physics Letters B
Título revista abreviado:Phys Lett Sect B Nucl Elem Part High-Energy Phys
ISSN:03702693
CODEN:PYLBA
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03702693_v240_n3-4_p322_Harari

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Citas:

---------- APA ----------
Harari, D.D. & Skarzhinsky, V.D. (1990) . Pair production in the gravitational field of a cosmic string. Physics Letters B, 240(3-4), 322-326.
http://dx.doi.org/10.1016/0370-2693(90)91106-L
---------- CHICAGO ----------
Harari, D.D., Skarzhinsky, V.D. "Pair production in the gravitational field of a cosmic string" . Physics Letters B 240, no. 3-4 (1990) : 322-326.
http://dx.doi.org/10.1016/0370-2693(90)91106-L
---------- MLA ----------
Harari, D.D., Skarzhinsky, V.D. "Pair production in the gravitational field of a cosmic string" . Physics Letters B, vol. 240, no. 3-4, 1990, pp. 322-326.
http://dx.doi.org/10.1016/0370-2693(90)91106-L
---------- VANCOUVER ----------
Harari, D.D., Skarzhinsky, V.D. Pair production in the gravitational field of a cosmic string. Phys Lett Sect B Nucl Elem Part High-Energy Phys. 1990;240(3-4):322-326.
http://dx.doi.org/10.1016/0370-2693(90)91106-L