Download Dark Energy and the Formation of the Large Scale Structure by Jérôme Gleyzes PDF

By Jérôme Gleyzes

This thesis provides numerous major new effects that make clear significant puzzles of contemporary cosmology: the character of inflation, the very early section of the universe that's proposal to have given upward push to the large-scale buildings that we detect this present day; and that of the present speeded up enlargement. specifically, it develops a fresh approach for characterizing linear cosmological perturbations for normal theories the place gravity is changed and/or tormented by a brand new part, known as darkish power, chargeable for the speeded up growth. It proposes a brand new extension to what have been lengthy regarded as the main normal scalar box theories without instabilities, and demonstrates the robustness of the relation among the strength scale of inflation and the expected amplitude of gravitational waves. ultimately, it consolidates a collection of consistency kin among correlation services of the cosmological density box and investigates the phenomenological results in their power violation. offered in a transparent, succinct and rigorous type, each one of those unique effects is either profound and significant and may go away a deep mark at the field.

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29) i k i ∂ K j ∂ Rl ∂N∂K j ∂ N ∂ R ij where all the partial derivatives are evaluated on the FLRW background (without explicit notation, as will be the case in the rest of this Chapter). The coefficient L N N denotes the second derivative of the Lagrangian with respect to N . The dots in the two above equations correspond to other possible terms which are not indicated explicitly to avoid too lengthy equations, but can be treated exactly in the same way. 28) can be simplified as follows. 30) ∂ K ij 28 2 The Effective Field Theory of Dark Energy and noting that K = ∇μ n μ , one can use the integration by parts √ d 4 x −g F K = − √ d 4 x −g n μ ∇μ F = − √ F˙ d 4 x −g .

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