2026-09-22T22:39:05Z https://www.ideals.illinois.edu/oai-pmh

oai:www.ideals.illinois.edu:2142/129963 2025-10-25 col_2142_5131 col_2142_8859 com_2142_5130 com_2142_8858 com_2142_234

application/pdf en text Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2025-10-20 without embargo terms The student, Anthony Mirasola, accepted the attached license on 2025-07-18 at 16:19. The student, Anthony Mirasola, submitted this Dissertation for approval on 2025-07-18 at 16:34. This Dissertation was approved for publication on 2025-07-18 at 16:56. DSpace SAF Submission Ingestion Package generated from Vireo submission #22659 on 2025-10-20 at 20:15:28 Novel effects in self-interacting scalar field dark matter solitons Mirasola, Anthony E. 2025-07-18 Kirkpatrick, Kay Prescod-Weinstein, Chanda Shelton, Jessie Adshead, Peter Axion Dark Matter Scalar Field Field Theory Cosmology Particle Physics Beyond Standard Model Gross Pitaevskii Equation Vortex eng More than five-sixths of the matter in the universe is dark matter, a substance which cannot be seen and which interacts with other particles almost entirely through gravity. The identity of the dark matter is a longstanding open question. A class of models known as scalar field dark matter (SFDM) are exciting dark matter candidates that share common properties including the formation of solitons in the cores of dark matter halos. Solitons are energetically stable, gravitationally bound states of an extremely large number of SFDM particles that are the solutions to the classical equations of motion for SFDM, and in this work we present results of studies into their properties. We investigate the ability of solitons to emerge from virialized initial conditions in dark matter halos through kinetic relaxation and calculate the timescales associated with this process. We simulate rotating solitons which develop a unique vortex structure and study conditions under which the vortices can remain stable. We also explore models of SFDM which are expanded to include multiple species with both gravitational and non-gravitational inter-species interactions. 2025-08 Text https://hdl.handle.net/2142/129963 Copyright 2025 Anthony E. Mirasola Physics Physics University of Illinois Urbana-Champaign Ph.D. Dissertation