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  On the gravitational, dilatonic and axionic radiative damping of cosmic strings

Buonanno, A., & Damour, T. (1999). On the gravitational, dilatonic and axionic radiative damping of cosmic strings. Physical Review D, 60: 023517. doi:10.1103/PhysRevD.60.023517.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0019-BDD9-A Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0019-BDDA-8
Genre: Journal Article

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 Creators:
Buonanno, Alessandra1, 2, Author              
Damour, Thibault, Author
Affiliations:
1Institut des Hautes Etudes Scientifiques, escidoc:persistent22              
2Astrophysical and Cosmological Relativity, AEI-Golm, MPI for Gravitational Physics, Max Planck Society, escidoc:1933290              

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Free keywords: General Relativity and Quantum Cosmology, gr-qc,Astrophysics, astro-ph,High Energy Physics - Theory, hep-th
 Abstract: We study the radiation reaction on cosmic strings due to the emission of dilatonic, gravitational and axionic waves. After verifying the (on average) conservative nature of the time-symmetric self-interactions, we concentrate on the finite radiation damping force associated with the half-retarded minus half-advanced ``reactive'' fields. We revisit a recent proposal of using a ``local back reaction approximation'' for the reactive fields. Using dimensional continuation as convenient technical tool, we find, contrary to previous claims, that this proposal leads to antidamping in the case of the axionic field, and to zero (integrated) damping in the case of the gravitational field. One gets normal positive damping only in the case of the dilatonic field. We propose to use a suitably modified version of the local dilatonic radiation reaction as a substitute for the exact (non-local) gravitational radiation reaction. The incorporation of such a local approximation to gravitational radiation reaction should allow one to complete, in a computationally non-intensive way, string network simulations and to give better estimates of the amount and spectrum of gravitational radiation emitted by a cosmologically evolving network of massive strings.

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 Dates: 1998-01-291999-06-171999
 Publication Status: Published in print
 Pages: 48 pages
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: arXiv: gr-qc/9801105
DOI: 10.1103/PhysRevD.60.023517
URI: http://arxiv.org/abs/gr-qc/9801105
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Title: Physical Review D
  Other : Phys. Rev. D.
Source Genre: Journal
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Publ. Info: Lancaster, Pa. : American Physical Society
Pages: - Volume / Issue: 60 Sequence Number: 023517 Start / End Page: - Identifier: ISSN: 0556-2821
CoNE: http://pubman.mpdl.mpg.de/cone/journals/resource/111088197762258