A f(R)esh take on gravity

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dc.contributor.advisorDunsby, Peter Klaus
dc.contributor.authorWorsley, Jess
dc.date.accessioned2026-01-30T10:36:54Z
dc.date.available2026-01-30T10:36:54Z
dc.date.issued2025
dc.date.updated2026-01-30T10:34:26Z
dc.description.abstractThis thesis explores perturbations in f(R) modified gravity theories, with a focus on understanding the growth of large-scale structures in the Universe. Modified gravity models, particularly f(R) theories, offer an alternative explanation for cosmic acceleration without invoking dark energy. The work is divided into four key areas: foundational methods in cosmology, structure formation, perturbation theory, and the application of these methods in modified gravity models. By analysing the evolution of cosmological perturbations in these models, this research aims to provide new insights into their viability and consistency with observational data. Particular attention is given to the development of a bottom-up approach, allowing the reconstruction of gravity theories from observational constraints and bypassing the limitations of traditional model-specific methods.
dc.identifier.apacitationWorsley, J. (2025). <i>A f(R)esh take on gravity</i>. (). ,Faculty of Science ,Department of Astronomy. Retrieved from http://hdl.handle.net/11427/42782en_ZA
dc.identifier.chicagocitationWorsley, Jess. <i>"A f(R)esh take on gravity."</i> ., ,Faculty of Science ,Department of Astronomy, 2025. http://hdl.handle.net/11427/42782en_ZA
dc.identifier.citationWorsley, J. 2025. A f(R)esh take on gravity. . ,Faculty of Science ,Department of Astronomy. http://hdl.handle.net/11427/42782en_ZA
dc.identifier.ris TY - Thesis / Dissertation AU - Worsley, Jess AB - This thesis explores perturbations in f(R) modified gravity theories, with a focus on understanding the growth of large-scale structures in the Universe. Modified gravity models, particularly f(R) theories, offer an alternative explanation for cosmic acceleration without invoking dark energy. The work is divided into four key areas: foundational methods in cosmology, structure formation, perturbation theory, and the application of these methods in modified gravity models. By analysing the evolution of cosmological perturbations in these models, this research aims to provide new insights into their viability and consistency with observational data. Particular attention is given to the development of a bottom-up approach, allowing the reconstruction of gravity theories from observational constraints and bypassing the limitations of traditional model-specific methods. DA - 2025 DB - OpenUCT DP - University of Cape Town KW - astronomy LK - https://open.uct.ac.za PY - 2025 T1 - A f(R)esh take on gravity TI - A f(R)esh take on gravity UR - http://hdl.handle.net/11427/42782 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/42782
dc.identifier.vancouvercitationWorsley J. A f(R)esh take on gravity. []. ,Faculty of Science ,Department of Astronomy, 2025 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/42782en_ZA
dc.language.isoen
dc.language.rfc3066eng
dc.publisher.departmentDepartment of Astronomy
dc.publisher.facultyFaculty of Science
dc.subjectastronomy
dc.titleA f(R)esh take on gravity
dc.typeThesis / Dissertation
dc.type.qualificationlevelMasters
dc.type.qualificationlevelMSc
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