Eq. (23): inflaton picture, $1/H = \varepsilon t + 1/H_0$ with $\varepsilon = \tfrac32\cdot\tfrac{4-\gamma}{2}$

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Eq. (23): inflaton picture, $1/H = \varepsilon t + 1/H_0$ with $\varepsilon = \tfrac32\cdot\tfrac{4-\gamma}{2}$ · Prove2Me