1202.3032 (Sachiko Kuroyanagi et al.)

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

Sachiko Kuroyanagi, Koichi Miyamoto, Toyokazu Sekiguchi, Keitaro Takahashi, Joseph Silk

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 $G\mu$ and initial loop size $\alpha$ and the
reconnection probability $p$, we find that the two different types of GW can
break degeneracies in some of these parameters and provide better constraints
than those from each measurement.

View original: http://arxiv.org/abs/1202.3032