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We investigate the method to measure both the present value of the matterenergy density contrast and the Hubble parameter directly from the measurementof the linear growth rate which is obtained from the large scale structure ofthe Universe. From this method, one can obtain the value of the nuisancecosmological parameter $\Omo$ (the present value of the matter energy densitycontrast) within 3% error if the growth rate measurement can be reached $z >3.5$. One can also investigate the evolution of the Hubble parameter withoutany prior on the value of $H_0$ (the current value of the Hubble parameter).Especially, estimating the Hubble parameter are insensitive to the errors onthe measurement of the normalized growth rate $f \sigma_8$. However, thismethod requires the high $z$ ($z > 3.5$) measurement of the growth rate inorder to get the less than 5% errors on the measurements of $H(z)$ at $z \leq1.2$ with the redshift bin $\Delta z = 0.2$. Thus, this will be suitable forthe next generation large scale structure galaxy surveys like WFMOS and LSST.

Measuring the matter energy density and Hubble parameter from Large Scale Structure