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Galilean first-order formulation for the nonrelativistic expansion of general relativity
Swiss Fed Inst Technol, Inst Theoret Phys, Wolfgang Pauli Str 27, CH-8093 Zurich, Switzerland..
Univ Edinburgh, Sch Math, Peter Guthrie Tait Rd, Edinburgh EH9 3FD, Midlothian, Scotland.;Univ Edinburgh, Maxwell Inst Math Sci, Peter Guthrie Tait Rd, Edinburgh EH9 3FD, Midlothian, Scotland..
KTH, Centres, Nordic Institute for Theoretical Physics NORDITA. Univ Copenhagen, Niels Bohr Inst, Blegdamsvej 17, DK-2100 Copenhagen O, Denmark..ORCID iD: 0000-0003-4947-8526
Univ Copenhagen, Niels Bohr Inst, Blegdamsvej 17, DK-2100 Copenhagen O, Denmark..
2021 (English)In: Physical Review D: covering particles, fields, gravitation, and cosmology, ISSN 2470-0010, E-ISSN 2470-0029, Vol. 104, no 6, article id L061501Article in journal (Refereed) Published
Abstract [en]

We reformulate the Palatini action for general relativity in terms of moving frames that exhibit local Galilean covariance in a large speed of light expansion. For this, we express the action in terms of variables that are adapted to a Galilean subgroup of the GL(n, R) structure group of a general frame bundle. This leads to a novel Palatini-type formulation of general relativity that provides a natural starting point for a first-order nonrelativistic expansion. in doing so, we show how a comparison of Lorentzian and Newton-Cartan metric compatibility explains the appearance of torsion in the nonrelativistic expansion.

Place, publisher, year, edition, pages
American Physical Society (APS) , 2021. Vol. 104, no 6, article id L061501
National Category
Astronomy, Astrophysics and Cosmology
Identifiers
URN: urn:nbn:se:kth:diva-304709DOI: 10.1103/PhysRevD.104.L061501ISI: 000704598800011Scopus ID: 2-s2.0-85115910117OAI: oai:DiVA.org:kth-304709DiVA, id: diva2:1610261
Note

QC 20211110

Available from: 2021-11-10 Created: 2021-11-10 Last updated: 2022-06-25Bibliographically approved

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Obers, Niels A.

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