{"689554":{"#nid":"689554","#data":{"type":"event","title":"MS Defense by John Karnosh","body":[{"value":"\u003Cp\u003E\u003Cstrong\u003ESchool of Physics Masters\u0026nbsp;Thesis Defense\u003C\/strong\u003E\u003C\/p\u003E\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\u003Cp\u003E\u003Cstrong\u003EJohn Karnosh\u003C\/strong\u003E\u003C\/p\u003E\u003Cp\u003EDr. Colin Parker, School of Physics, Georgia Institute of Technology (Advisor)\u003C\/p\u003E\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\u003Cp\u003E\u003Cstrong\u003EBEC-BCS Crossover of an Ultracold Lithium-6 Gas in a Shaken Optical Lattice\u003C\/strong\u003E\u003C\/p\u003E\u003Cp\u003EDate: Thursday, April 16, 2026\u003C\/p\u003E\u003Cp\u003ETime: 2:00 p.m.\u003C\/p\u003E\u003Cp\u003ELocation: Howey Physics Building, W505\u003C\/p\u003E\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\u003Cp\u003E\u003Cstrong\u003ECommittee members\u003C\/strong\u003E:\u003C\/p\u003E\u003Cp\u003EDr. Michael Chapman, School of Physics, Georgia Institute of Technology\u003C\/p\u003E\u003Cp\u003EDr.\u0026nbsp;Dragomir Davidovic,\u0026nbsp;School of Physics, Georgia Institute of Technology\u003C\/p\u003E\u003Cp\u003EDr.\u0026nbsp;Carlos S\u00e1 de Melo, School of Physics, Georgia Institute of Technology\u003C\/p\u003E\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\u003Cp\u003E\u003Cstrong\u003EAbstract\u003C\/strong\u003E:\u003C\/p\u003E\u003Cp\u003EUltracold atoms serve as a useful platform for studying a wide variety of quantum systems due to the high degree of control and tunability which is experimentally achievable. A particularly interesting system is the unitary fermi gas in which the scattering length diverges and interactions become very strong. The broad magnetic Feshbach resonance present in lithium-6 at 834 Gauss allows tuning of the scattering length and interaction strength across the BEC-BCS crossover. This thesis investigates the dynamics of a molecular Bose-Einstein condensate in a double well dispersion generated by a 1 dimensional shaken optical lattice, resulting in a bifurcation of the condensate in momentum space. The effects of magnetic field ramps towards the resonance from the BEC side are studied to begin to build a picture of how the interaction strength modifies these dynamics. Additionally, this thesis studies aspects of the experimental system regarding efficient operation and troubleshooting.\u003C\/p\u003E\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E","summary":"","format":"limited_html"}],"field_subtitle":"","field_summary":[{"value":"\u003Cp\u003E\u003Cstrong\u003EBEC-BCS Crossover of an Ultracold Lithium-6 Gas in a Shaken Optical Lattice\u003C\/strong\u003E\u003C\/p\u003E","format":"limited_html"}],"field_summary_sentence":[{"value":"BEC-BCS Crossover of an Ultracold Lithium-6 Gas in a Shaken Optical Lattice"}],"uid":"27707","created_gmt":"2026-04-07 21:02:43","changed_gmt":"2026-04-07 21:03:14","author":"Tatianna Richardson","boilerplate_text":"","field_publication":"","field_article_url":"","field_event_time":{"event_time_start":"2026-04-16T14:00:00-04:00","event_time_end":"2026-04-16T16:00:00-04:00","event_time_end_last":"2026-04-16T16:00:00-04:00","gmt_time_start":"2026-04-16 18:00:00","gmt_time_end":"2026-04-16 20:00:00","gmt_time_end_last":"2026-04-16 20:00:00","rrule":null,"timezone":"America\/New_York"},"location":"Howey Physics Building, W505","extras":[],"groups":[{"id":"221981","name":"Graduate Studies"}],"categories":[],"keywords":[{"id":"111531","name":"ms defense"}],"core_research_areas":[],"news_room_topics":[],"event_categories":[{"id":"1788","name":"Other\/Miscellaneous"}],"invited_audience":[{"id":"78771","name":"Public"}],"affiliations":[],"classification":[],"areas_of_expertise":[],"news_and_recent_appearances":[],"phone":[],"contact":[],"email":[],"slides":[],"orientation":[],"userdata":""}}}