The optimal approach of detecting stochastic gravitational wave from string cosmology using multiple detectors - AstrophysicsReport as inadecuate




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Abstract: String cosmology models predict a relic background of gravitational waveproduced during the dilaton-driven inflation. It-s spectrum is most likely tobe detected by ground gravitational wave laser interferometers IFOs, likeLIGO, Virgo, GEO, as the energy density grows rapidly with frequency. We showthe certain ranges of the parameters that underlying string cosmology modelusing two approaches, associated with 5% false alarm and 95% detection rate.The result presents that the approach of combining multiple pairs of IFOs isbetter than the approach of directly combining the outputs of multiple IFOs forLIGOH, LIGOL, Virgo and GEO.



Author: Xi-Long Fan, Zong-Hong Zhu

Source: https://arxiv.org/







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