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Setting the connection free in the Galilei and Carroll expansions of gravity
School of Mathematics and Maxwell Institute for Mathematical Sciences, University of Edinburgh, Peter Guthrie Tait Road, Edinburgh EH9 3FD, United Kingdom, Peter Guthrie Tait Road.
KTH, Centra, Nordic Institute for Theoretical Physics NORDITA. Stockholm University, Hannes Alfvéns väg 12, SE-106 91 Stockholm, Sweden, Hannes Alfvéns väg 12; Niels Bohr International Academy, The Niels Bohr Institute, University of Copenhagen, Blegdamsvej 17, DK-2100 Copenhagen Ø, Denmark.ORCID-id: 0000-0003-4947-8526
School of Mathematics and Maxwell Institute for Mathematical Sciences, University of Edinburgh, Peter Guthrie Tait Road, Edinburgh EH9 3FD, United Kingdom, Peter Guthrie Tait Road.
2024 (Engelska)Ingår i: Physical Review D: covering particles, fields, gravitation, and cosmology, ISSN 2470-0010, E-ISSN 2470-0029, Vol. 109, nr 10, artikel-id 104040Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

We obtain a Palatini-type formulation for the Galilei and Carroll expansions of general relativity, where the connection is promoted to a variable. Known versions of these large and small speed of light expansions are derived from the Einstein-Hilbert action and involve dynamical Newton-Cartan or Carroll geometry, along with additional gauge fields at subleading orders. The corresponding Palatini actions that we obtain in this paper are derived from an appropriate expansion of the Einstein-Palatini action, and the connection variable reduces to the Galilei- or Carroll-adapted connection on shell. In particular, we present the Palatini form for the next-to-leading-order Galilean action and recover the known equations of motion. We also compute the leading-order Palatini-type action for the Carrollian case and show that, while it depends on the connection variable, it reduces on shell to the known action of electric Carroll gravity, which only depends on extrinsic curvature.

Ort, förlag, år, upplaga, sidor
American Physical Society (APS) , 2024. Vol. 109, nr 10, artikel-id 104040
Nationell ämneskategori
Astronomi, astrofysik och kosmologi
Identifikatorer
URN: urn:nbn:se:kth:diva-346824DOI: 10.1103/PhysRevD.109.104040ISI: 001237678600002Scopus ID: 2-s2.0-85192778690OAI: oai:DiVA.org:kth-346824DiVA, id: diva2:1860438
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QC 20240619

Tillgänglig från: 2024-05-24 Skapad: 2024-05-24 Senast uppdaterad: 2024-06-19Bibliografiskt granskad

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Obers, Niels A.

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Nordic Institute for Theoretical Physics NORDITA
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Physical Review D: covering particles, fields, gravitation, and cosmology
Astronomi, astrofysik och kosmologi

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