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Cosmological solutions of the Einstein-Friedmann equations ...

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Cosmology<br />

Since ρ(t)S (t) 4 = ρ0S 4 0<br />

implying<br />

= constant we have<br />

ρ(t) ∝ T 4 (t) ∝ 1<br />

S (t) 4<br />

T(t) = T0 S 0<br />

S (t)<br />

c○ 2009, F. Jegerlehner ≪❘ Lect. 7 ❘≫ 464

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