Work

Cosmological perturbation theory and quantum gravity

Year: 2016

Type: article

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.

Source: Journal of High Energy Physics

DOI: 10.1007/jhep08(2016)032

Authors: Romeo Brunetti, Klaus Fredenhagen, Thomas-Paul Hack, Nicola Pinamonti, Katarzyna Rejzner

Institutions: University of Trento, Universität Hamburg, Leipzig University, Istituto Nazionale di Fisica Nucleare, Sezione di Genova, University of Genoa, University of York

Language: English

Topic: Noncommutative and Quantum Gravity Theories

Subfield: Statistical and Nonlinear Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: diamond

OpenAlex ID: W2389865232

FWCI: 2.462

Cites: 36

Cited by: 39

Related to: 10