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dc.contributor.author
D'Ambrosio, Fabio
dc.contributor.author
Heisenberg, Lavinia
dc.contributor.author
Kuhn, Simon
dc.date.accessioned
2022-05-03T08:19:44Z
dc.date.available
2022-05-03T08:19:44Z
dc.date.issued
2022-01-20
dc.identifier.issn
0264-9381
dc.identifier.issn
1361-6382
dc.identifier.other
10.1088/1361-6382/ac3f99
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/544811
dc.description.abstract
We discuss the most general field equations for cosmological spacetimes for theories of gravity based on non-linear extensions of the non-metricity scalar and the torsion scalar. Our approach is based on a systematic symmetry-reduction of the metric-affine geometry which underlies these theories. While for the simplest conceivable case the connection disappears from the field equations and one obtains the Friedmann equations of general relativity, we show that in Γα μ ν =0 cosmology the connection generically modifies the metric field equations and that some of the connection components become dynamical. We show that f(Q) cosmology contains the exact general relativity solutions and also exact solutions which go beyond. In f(Q) cosmology, however, the connection is completely fixed and not dynamical.
en_US
dc.language.iso
en
en_US
dc.publisher
IOP Publishing
en_US
dc.subject
cosmology
en_US
dc.subject
extensions of general relativity
en_US
dc.subject
teleparallelism
en_US
dc.title
Revisiting cosmologies in teleparallelism
en_US
dc.type
Journal Article
dc.date.published
2021-12-23
ethz.journal.title
Classical and Quantum Gravity
ethz.journal.volume
39
en_US
ethz.journal.issue
2
en_US
ethz.journal.abbreviated
Class. Quantum Grav.
ethz.pages.start
025013
en_US
ethz.size
23 p.
en_US
ethz.grant
Modified Gravity on Trial
en_US
ethz.grant
Multimessenger constraints of modified gravity
en_US
ethz.identifier.wos
ethz.identifier.scopus
ethz.publication.place
Bristol
en_US
ethz.publication.status
published
en_US
ethz.leitzahl
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02010 - Dep. Physik / Dep. of Physics::02511 - Institut für Theoretische Physik / Institute for Theoretical Physics::09662 - Heisenberg, Lavinia / Heisenberg, Lavinia
en_US
ethz.leitzahl.certified
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02010 - Dep. Physik / Dep. of Physics::02511 - Institut für Theoretische Physik / Institute for Theoretical Physics::09662 - Heisenberg, Lavinia / Heisenberg, Lavinia
ethz.grant.agreementno
801781
ethz.grant.agreementno
179740
ethz.grant.fundername
EC
ethz.grant.fundername
SNF
ethz.grant.funderDoi
10.13039/501100000780
ethz.grant.funderDoi
10.13039/501100001711
ethz.grant.program
H2020
ethz.grant.program
PRIMA
ethz.date.deposited
2022-01-01T03:47:04Z
ethz.source
SCOPUS
ethz.source
WOS
ethz.eth
yes
en_US
ethz.availability
Metadata only
en_US
ethz.rosetta.installDate
2022-05-03T08:19:53Z
ethz.rosetta.lastUpdated
2022-05-03T08:19:53Z
ethz.rosetta.versionExported
true
dc.identifier.olduri
http://hdl.handle.net/20.500.11850/525858
dc.identifier.olduri
http://hdl.handle.net/20.500.11850/522528
ethz.COinS
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