Beyond Schrödinger-Poisson: nonrelativistic effective field theory for scalar dark matter

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dc.citation.firstpage50en_US
dc.citation.journalTitleJournal of High Energy Physicsen_US
dc.citation.volumeNumber2021en_US
dc.contributor.authorSalehian, Bornaen_US
dc.contributor.authorZhang, Hong-Yien_US
dc.contributor.authorAmin, Mustafa A.en_US
dc.contributor.authorKaiser, David I.en_US
dc.contributor.authorNamjoo, Mohammad Hosseinen_US
dc.date.accessioned2021-09-23T17:11:33Zen_US
dc.date.available2021-09-23T17:11:33Zen_US
dc.date.issued2021en_US
dc.description.abstractMassive scalar fields provide excellent dark matter candidates, whose dynamics are often explored analytically and numerically using nonrelativistic Schrödinger-Poisson (SP) equations in a cosmological context. In this paper, starting from the nonlinear and fully relativistic Klein-Gordon-Einstein (KGE) equations in an expanding universe, we provide a systematic framework for deriving the SP equations, as well as relativistic corrections to them, by integrating out ‘fast modes’ and including nonlinear metric and matter contributions. We provide explicit equations for the leading-order relativistic corrections, which provide insight into deviations from the SP equations as the system approaches the relativistic regime. Upon including the leading-order corrections, our equations are applicable beyond the domain of validity of the SP system, and are simpler to use than the full KGE case in some contexts. As a concrete application, we calculate the mass-radius relationship of solitons in scalar dark matter and accurately capture the deviations of this relationship from the SP system towards the KGE one.en_US
dc.identifier.citationSalehian, Borna, Zhang, Hong-Yi, Amin, Mustafa A., et al.. "Beyond Schrödinger-Poisson: nonrelativistic effective field theory for scalar dark matter." <i>Journal of High Energy Physics,</i> 2021, (2021) Springer Nature: 50. https://doi.org/10.1007/JHEP09(2021)050.en_US
dc.identifier.digitalSalehian2021en_US
dc.identifier.doihttps://doi.org/10.1007/JHEP09(2021)050en_US
dc.identifier.urihttps://hdl.handle.net/1911/111401en_US
dc.language.isoengen_US
dc.publisherSpringer Natureen_US
dc.rightsThis article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited.en_US
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/en_US
dc.titleBeyond Schrödinger-Poisson: nonrelativistic effective field theory for scalar dark matteren_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpublisher versionen_US
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