Approaches to linear local gauge-invariant observables in inflationary cosmologies

Markus Benjamin Fröb; Thomas-Paul Hack; Igor Khavkine

doi:10.1088/1361-6382/aabcb7

Approaches to linear local gauge-invariant observables in inflationary cosmologies

Markus Benjamin Fröb, Thomas-Paul Hack, Igor Khavkine

Mathematics

Research output: Contribution to journal › Article › peer-review

Abstract

We review and relate two recent complementary constructions of linear local gauge-invariant observables for cosmological perturbations in generic spatially flat single-field inflationary cosmologies. After briefly discussing their physical significance, we give explicit, covariant and mutually invertible transformations between the two sets of observables, thus resolving any doubts about their equivalence. In this way, we get a geometric interpretation and show the completeness of both sets of observables, while previously each of these properties was available only for one of them.

Original language	English
Number of pages	15
Journal	Classical and Quantum Gravity
Volume	35
Issue number	11
Early online date	30 Apr 2018
DOIs	https://doi.org/10.1088/1361-6382/aabcb7
Publication status	Published - 7 Jun 2018

Bibliographical note

© 2018, IOP Publishing Ltd. This is an author-produced version of the published paper. Uploaded in accordance with the publisher’s self-archiving policy. Further copying may not be permitted; contact the publisher for details.

Access to Document

10.1088/1361-6382/aabcb7

Fröb+et+al_2018_Class._Quantum_Grav._10.1088_1361-6382_aabcb7
© 2018, IOP Publishing Ltd. This is an author-produced version of the published paper. Uploaded in accordance with the publisher’s self-archiving policy. Further copying may not be permitted; contact the publisher for details.
Accepted author manuscript, 482 KBLicence: Unspecified

Cite this

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