GENERALIZED NATURAL INFLATION AND THE QUEST FOR COSMIC SYMMETRY BREAKING PATTERNS

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dc.contributor.advisorChacko, Zackariaen_US
dc.contributor.advisorWentworth, Richarden_US
dc.contributor.authorRiquelme, Simonen_US
dc.contributor.departmentPhysicsen_US
dc.contributor.publisherDigital Repository at the University of Marylanden_US
dc.contributor.publisherUniversity of Maryland (College Park, Md.)en_US
dc.date.accessioned2019-01-31T06:31:28Z
dc.date.available2019-01-31T06:31:28Z
dc.date.issued2018en_US
dc.description.abstractWe present a two-field model that generalizes Natural Inflation, in which the inflaton is the pseudo-Goldstone boson of an approximate symmetry that is spontaneously broken, and the radial mode is dynamical. Within this model, which we designate as ``Generalized Natural Inflation'', we analyze how the dynamics fundamentally depends on the mass of the radial mode and determine the size of the non-Gaussianities arising from such a scenario. We also motivate ongoing research within the coset construction formalism, that aims to clarify how the spontaneous symmetry breaking pattern of spacetime, gauge, and internal symmetries may allow us to get a deeper understanding, and an actual algebraic classification in the spirit of the so-called ``zoology of condensed matter'', of different possible ``cosmic states'', some of which may be quite relevant for model-independent statements about different phases in the evolution of our universe. The outcome of these investigations will be reported elsewhere.en_US
dc.identifierhttps://doi.org/10.13016/dcmr-j5ns
dc.identifier.urihttp://hdl.handle.net/1903/21578
dc.language.isoenen_US
dc.subject.pqcontrolledParticle physicsen_US
dc.subject.pqcontrolledTheoretical physicsen_US
dc.subject.pqcontrolledAstrophysicsen_US
dc.subject.pquncontrolledCosmologyen_US
dc.subject.pquncontrolledEarly Universeen_US
dc.subject.pquncontrolledInflationen_US
dc.subject.pquncontrolledNon-Gaussianitiesen_US
dc.subject.pquncontrolledPrimordial Perturbationsen_US
dc.subject.pquncontrolledSpacetime Symmetriesen_US
dc.titleGENERALIZED NATURAL INFLATION AND THE QUEST FOR COSMIC SYMMETRY BREAKING PATTERNSen_US
dc.typeDissertationen_US

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