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  Closed-form expression for the momentum radiated from cosmic string loops

Allen, B., Casper, P., & Ottewill, A. C. (1995). Closed-form expression for the momentum radiated from cosmic string loops. Physical Review D, 51(4), 1546-1552. doi:10.1103/PhysRevD.51.1546.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-5BAB-3 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-5BAC-1
Genre: Journal Article

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prd-95-51-1546.pdf (Publisher version), 2MB
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 Creators:
Allen, Bruce1, Author              
Casper, Paul, Author
Ottewill, Adrian C., Author
Affiliations:
1Observational Relativity and Cosmology, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society, escidoc:24011              

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 Abstract: We modify the recent analytic formula given by Allen and Casper for the rate at which piecewise linear cosmic string loops lose energy to gravitational radiation to yield the analogous analytic formula for the rate at which loops radiate momentum. The resulting formula (which is exact when the effects of gravitational back reaction are neglected) is a sum of O(N4) polynomial and log terms where N is the total number of segments on the piecewise linear string loop. As an illustration, we write the formula explicitly for a simple one-parameter family of loops with N=5. For most loops the large number of terms makes evaluation ‘‘by hand’’ impractical, but a computer or symbolic manipulator may be used to yield accurate results. The formula has been used to correct numerical results given in the existing literature. To assist future work in this area, a small catalog of results for a number of simple string loops is provided.

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 Dates: 1995-02-15
 Publication Status: Published in print
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Title: Physical Review D
Source Genre: Journal
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Pages: - Volume / Issue: 51 (4) Sequence Number: - Start / End Page: 1546 - 1552 Identifier: ISSN: 0556-2821