Probing the primordial universe with gravitational waves detectors

2016/12/31 by Yu-Tong Wang, Yong Cai, Zhi-Guo Liu +1 · 21 citations
Physics and Astronomy · #Background radiation #Cosmology #Cosmology and Gravitation Theories #Dark Matter and Cosmic Phenomena #Detector #Einstein #Einstein Telescope #Field (mathematics) #Gravitational wave #Inflation (cosmology) #Limit (mathematics) #Pulsars and Gravitational Waves Research #Universe #astro-ph.CO #gr-qc

paper · pdf · doi:10.1088/1475-7516/2017/01/010

published in Journal of Cosmology and Astroparticle Physics 2017(01), 010 (Institute of Physics) · 17 pages, 5 figures, 2 tables; published version, a new subsection and many references added

arxiv created 2017/01/04 · openalex publication_date 2017/01/04 · arxiv updated 2017/01/05 · openalex created_date 2017/01/13 · openalex updated_date 2026/08/05

Abstract

The spectrum of primordial gravitational waves (GWs), especially its tilt n T , carries significant information about the primordial universe. Combining recent aLIGO and Planck2015+BK14 data, we find that the current limit is n T =0.016 +0.614 −0.989 at 95% C.L. We also estimate the impacts of Einstein Telescope and LISA on constraining n T . Moreover, based on the effective field theory of cosmological perturbations, we make an attempt to confront some models of early universe scenarios, which produce blue-tilted GWs spectrum ( n T >0 ), with the corresponding datasets.

Citations

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