Cosmological Perturbations from Non-Equilibrium Quantum Fields
Cosmological Perturbations from Non-Equilibrium Quantum Fields
Cosmological Perturbations from Non-Equilibrium Quantum Fields
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Separate Universes<br />
Each horizon volume ∼ separate<br />
FRW universe (Salopek&Bond 1990)<br />
Described by a separate<br />
Friedmann equation<br />
(ȧ ) 2<br />
H 2 = = ρ<br />
a<br />
3M 2 P l<br />
Curvature perturbation<br />
ζ = δT/T = δ ln a| ρ=ρ∗<br />
Valid at distances d ≫ 1/H<br />
Arttu Rajantie<br />
<strong>Cosmological</strong> <strong>Perturbations</strong> <strong>from</strong> <strong>Non</strong>-<strong>Equilibrium</strong> <strong>Quantum</strong> <strong>Fields</strong> – SEWM 2012
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