Title:
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Semiclassical back reaction in the formation of a straight cosmic string
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Author:
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Campos, Antonio; Martín Menéndez, Rosario; Verdaguer Oms, Enric, 1950-
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Other authors:
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Universitat de Barcelona |
Abstract:
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We derive the back reaction on the gravitational field of a straight cosmic string during its formation due to the gravitational coupling of the string to quantum matter fields. A very simple model of string formation is considered. The gravitational field of the string is computed in the linear approximation. The vacuum expectation value of the stress tensor of a massless scalar quantum field coupled to the string gravitational field is computed to one loop order. Finally, the back-reaction effect is obtained by solving perturbatively the semiclassical Einsteins equations. |
Subject(s):
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-Astrofísica -Relativitat general (Física) -Gravitació -Models de corda -Teoria de camps (Física) -Astrophysics -General relativity (Physics) -Gravitation -String models -Field theory (Physics) |
Rights:
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(c) The American Physical Society, 1995
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Document type:
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Article Article - Published version |
Published by:
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The American Physical Society
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