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dc.date.accessioned2020-08-25T18:13:18Z
dc.date.available2021-07-15T22:45:48Z
dc.date.created2020-08-18T12:14:16Z
dc.date.issued2020
dc.identifier.citationBanerjee, Shreya Bera, Sayantani Mota, David . Growth of linear perturbations in a universe with superfluid dark matter. Journal of Cosmology and Astroparticle Physics. 2020, 2020(07)
dc.identifier.urihttp://hdl.handle.net/10852/78828
dc.description.abstractThe Lambda-Cold Dark Matter (ΛCDM) model agrees with most of the cosmological observations, but has some hindrances from observed data at smaller scales such as galaxies. Recently, Berezhiani and Khoury proposed a new theory involving interacting superfluid dark matter with three model parameters in [1], which explains galactic dynamics with great accuracy. In the present work, we study the cosmological behaviour of this model in the linear regime of cosmological perturbations. In particular, we compute both analytically and numerically the matter linear growth factor and obtain new bounds for the model parameters which are significantly stronger than previously found. These new constraints come from the fact that structures within the superfluid dark matter framework grow quicker than in ΛCDM, and quite rapidly when the DM-baryon interactions are strong.
dc.languageEN
dc.titleGrowth of linear perturbations in a universe with superfluid dark matter
dc.typeJournal article
dc.creator.authorBanerjee, Shreya
dc.creator.authorBera, Sayantani
dc.creator.authorMota, David
cristin.unitcode185,15,3,0
cristin.unitnameInstitutt for teoretisk astrofysikk
cristin.ispublishedtrue
cristin.fulltextpostprint
cristin.qualitycode1
dc.identifier.cristin1823804
dc.identifier.bibliographiccitationinfo:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Journal of Cosmology and Astroparticle Physics&rft.volume=2020&rft.spage=&rft.date=2020
dc.identifier.jtitleJournal of Cosmology and Astroparticle Physics
dc.identifier.volume2020
dc.identifier.issue07
dc.identifier.pagecount17
dc.identifier.doihttps://doi.org/10.1088/1475-7516/2020/07/034
dc.identifier.urnURN:NBN:no-81940
dc.type.documentTidsskriftartikkel
dc.type.peerreviewedPeer reviewed
dc.source.issn1475-7516
dc.identifier.fulltextFulltext https://www.duo.uio.no/bitstream/handle/10852/78828/2/2001.02591.pdf
dc.type.versionAcceptedVersion
cristin.articleid034
dc.relation.projectNFR/301367
dc.relation.projectNFR/287772


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