Relic Gravitational Waves and the Evolution of the Universe
نویسنده
چکیده
In the inflation cosmic models, the relic gravitational waves (RGW) generated in the inflation stage, and evolved in the universe until now. In the different cosmic evolution models, one can get different gravitational waves spectrum. In this paper, we give a simple formula to estimate the spectrum in a general cosmic model. From this spectrum, one can easily find the relation between the RGW spectrum and the cosmic models. The spectrum includes the information about the universe evolution from inflation to now. So RGW may be a more useful tool to research the universe than cosmic microwave background radiation (CMB). PACS numbers: 98.80.-k, 98.80.Es, 04.30.-w, 04.62+v,
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