Cosmological perturbation theory and quantum gravity

Abstract

It is shown how cosmological perturbation theory arises from a fully quantized perturbative theory of quantum gravity. Central for the derivation is a non-perturbative concept of gauge-invariant local observables by means of which perturbative invariant expressions of arbitrary order are generated. In particular, in the linearised theory, first order gauge-invariant observables familiar from cosmological perturbation theory are recovered. Explicit expressions of second order quantities are presented as well.

18 pages

References in corpus (2)

• Gauge invariant perturbations around symmetry reduced sectors of general relativity: applications to cosmology
• Recursive structure in the definitions of gauge-invariant variables for any order perturbations

Cited by in corpus (24)

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