Probing the equation of state of the early universe with a space laser interferometer

Details Probing the equation of state of the early universe with a space laser interferometer Probing the equation of state of the early universe with a space laser interferometer

2003-05-26

arxiv.org/abs/gr-qc/0305096v1

J.Phys.Soc.Jap. 72 (2003) 3082-3086

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

10 pages, 1 figure

Scientific paper

10.1143/JPSJ.72.3082

We propose a method to probe the equation of state of the early universe and its evolution, using the stochastic gravitational wave background from inflation. A small deviation from purely radiation dominated universe ($w= 1/3$) would be clearly imprinted on the gravitational wave spectrum $\Omega_{GW}(f)$ due to the nearly scale invariant nature of inflationary generated waves.

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