Forecast constraints on cosmic string parameters from gravitational wave direct detection experiments

2012/02/29 by Sachiko Kuroyanagi, Koichi Miyamoto, Toyokazu Sekiguchi +2 · 2 citations
Physics and Astronomy · #Astrophysics #Black Holes and Theoretical Physics #COSMIC cancer database #Classical mechanics #Cosmic string #Cosmology and Gravitation Theories #Gravitation #Gravitational wave #Physics #Pulsars and Gravitational Waves Research #String (physics) #Theoretical physics #astro-ph.CO #gr-qc #hep-ph #hep-th

paper · pdf · doi:10.1103/physrevd.86.023503

published as Phys.Rev.D86:023503,2012 · 28 pages, 6 figures; matches version to appear in PRD

arxiv created 2012/06/25 · openalex publication_date 2012/07/03 · arxiv updated 2012/07/10 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

Gravitational waves (GWs) are one of the key signatures of cosmic strings. If GWs from cosmic strings are detected in future experiments, not only their existence can be confirmed, but also their properties might be probed. In this paper, we study the determination of cosmic string parameters through direct detection of GW signatures in future ground-based GW experiments. We consider two types of GWs, bursts and the stochastic GW background, which provide us with different information about cosmic string properties. Performing the Fisher matrix calculation on the cosmic string parameters, such as parameters governing the string tension G\ensuremathμ and initial loop size \ensuremathα and the reconnection probability p, we find that the two different types of GWs can break degeneracies in some of these parameters and provide better constraints than those from each measurement.

Citations

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Cited by

• Primordial magnetic fields from the string network
• Comparison of cosmic string and superstring models to NANOGrav 12.5-year results