In an empty Universe we can write PR = M = 0, 2x = 1. H² H² = (PRа+ + Ma³ + Q²₁a²²)→ H² = H₂₁²a-² (à/a)² = Ho2a-2 à = Ho Which of the following solves the Friedmann Equations in such a Universe? A. a(t) = At B. a(t) = B t¹/3 C. a(t) = C t²/3 D. a(t) = D t¹/2 E. a(t) = E eHot

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Why A
In an empty Universe we can write PR = PM = 0, 2x = 1.
H²
H²
=
(PRа+ + Mï³ + 2²₁a²²) ➜ H²=H₂²a-²
(à/a)² = H₂²a-²
á = Ho
-2
Which of the following solves the Friedmann Equations in
such a Universe?
A. a(t) = A t
B. a(t) = B t¹/3
C. a(t) = Ct2/3
D. a(t) = D t¹/2
E. a(t) = E eHot
Transcribed Image Text:Why A In an empty Universe we can write PR = PM = 0, 2x = 1. H² H² = (PRа+ + Mï³ + 2²₁a²²) ➜ H²=H₂²a-² (à/a)² = H₂²a-² á = Ho -2 Which of the following solves the Friedmann Equations in such a Universe? A. a(t) = A t B. a(t) = B t¹/3 C. a(t) = Ct2/3 D. a(t) = D t¹/2 E. a(t) = E eHot
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