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dc.contributor.advisorSchmaltz, Martinen_US
dc.contributor.advisorKatz, Emanuelen_US
dc.contributor.authorBuen Abad Najar, Manuel Alejandroen_US
dc.date.accessioned2019-01-25T18:59:31Z
dc.date.available2019-01-25T18:59:31Z
dc.date.issued2018
dc.identifier.urihttps://hdl.handle.net/2144/33207
dc.description.abstractWe present two different interacting dark sector models: one in which the dark matter particle is charged under a non-abelian dark gauge group, whose gauge bosons constitute a dark radiation component; and one in which a fraction of the dark matter has efficient number-changing self-interactions that keep it warm. We find that in general the structure formation is slowed down in these models, which addresses a discrepancy in the measurement of the σ8 parameter of large-scale structure. We also perform fits to cosmological data for a generalization of the non-abelian model (in which only a fraction of the dark matter interacts with the dark gauge bosons) and show that it can ease the current experimental tension in the measurement of the Hubble expansion rate H0.en_US
dc.language.isoen_US
dc.subjectParticle physicsen_US
dc.subjectCosmologyen_US
dc.subjectLarge-scale structureen_US
dc.subjectDark sectorsen_US
dc.subjectDark matteren_US
dc.subjectInteracting dark matteren_US
dc.subjectInteracting dark sectorsen_US
dc.titleInteracting dark sectors in cosmologyen_US
dc.typeThesis/Dissertationen_US
dc.date.updated2018-11-27T20:02:44Z
etd.degree.nameDoctor of Philosophyen_US
etd.degree.leveldoctoralen_US
etd.degree.disciplinePhysicsen_US
etd.degree.grantorBoston Universityen_US


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