Gravitational Wave Bursts from Cosmic Superstring Reconnections

Details Gravitational Wave Bursts from Cosmic Superstring Reconnections Gravitational Wave Bursts from Cosmic Superstring Reconnections

2009-01-07

arxiv.org/abs/0901.0867v2

JHEP 0906:089,2009

Physics

High Energy Physics

High Energy Physics - Theory

26 pages, 6 figures; v2: references added and typos corrected

Scientific paper

10.1088/1126-6708/2009/06/089

We compute the gravitational waveform produced by cosmic superstring reconnections. This is done by first constructing the superstring reconnection trajectory, which closely resembles that of classical, instantaneous reconnection but with the singularities smoothed out due to the string path integral. We then evaluate the graviton vertex operator in this background to obtain the burst amplitude. The result is compared to the detection threshold for current and future gravitational wave detectors, finding that neither bursts nor the stochastic background would be detectable by Advanced LIGO. This disappointing but anticipated conclusion holds even for the most optimistic values of the reconnection probability and loop sizes.

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