The optimal approach of detecting stochastic gravitational wave from string cosmology using multiple detectors

Details The optimal approach of detecting stochastic gravitational wave from string cosmology using multiple detectors The optimal approach of detecting stochastic gravitational wave from string cosmology using multiple detectors

2008-04-17

arxiv.org/abs/0804.2918v1

Phys.Lett.B663:17-20,2008

Astronomy and Astrophysics

Astrophysics

4 pages, 4 figures, accepted for publication in Physics Letters B

Scientific paper

10.1016/j.physletb.2008.03.042

String cosmology models predict a relic background of gravitational wave produced during the dilaton-driven inflation. It's spectrum is most likely to be detected by ground gravitational wave laser interferometers (IFOs), like LIGO, Virgo, GEO, as the energy density grows rapidly with frequency. We show the certain ranges of the parameters that underlying string cosmology model using two approaches, associated with 5% false alarm and 95% detection rate. The result presents that the approach of combining multiple pairs of IFOs is better than the approach of directly combining the outputs of multiple IFOs for LIGOH, LIGOL, Virgo and GEO.

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