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1995

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Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/12306

Semiclassical back reaction in the formation of a straight cosmic string

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http://dx.doi.org/10.1103/PhysRevD.52.4319

Abstract

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

Astrofísica, Relativitat general (Física), Gravitació, Models de corda, Teoria de camps (Física)

Subject (English)

Astrophysics, General relativity (Physics), Gravitation, String models, Field theory (Physics)

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Articles publicats en revistes (Física de la Matèria Condensada)

Citation

CAMPOS, Antonio, MARTÍN MENÉNDEZ, Rosario and VERDAGUER OMS, Enric. Semiclassical back reaction in the formation of a straight cosmic string. Physical Review D. 1995. Vol. 52, num. 8, pags. 4319-4336. ISSN 0556-2821. [consulted: 12 of June of 2026]. Available at: https://hdl.handle.net/2445/12306

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