{"id":{"repo_id":"unr","oai_identifier":"oai:scholarwolf.unr.edu:11714/2964"},"canonical_url":"https://search.dev.ndltd.org/etd/unr/oai:scholarwolf.unr.edu:11714/2964","repository":{"repo_id":"unr","name":"University of Nevada - Reno","base_url":"https://scholarwolf.unr.edu/server/oai/request"},"display":{"title":"Computational Atomic Structure and Search for New Physics","abstract":"The overarching goal of this dissertation is to examine constraints on extensions tothe Standard Model (SM) through atomic-structure computations. More specifically,atomic parity-nonconserving (PNC) amplitudes and intrinsic electric dipole moments(EDM) are examined for sources of physics beyond the SM. Precision calculationsof these properties in the trivalent thallium atom, will help set new constraints onsearches beyond the SM.To this end, the first half of the dissertation is devoted to improving atomic structurecalculations. In particular, we numerically investigate the effectivenessof two convergence methods for coupled-cluster (CC) method. Further we explorethe feasibility of transferring high-precision CC methods, developed for monovalentatoms, to trivalent systems. Here we showcase calculations of various properties of thetrivalent atomic boron as a prototype for future precision computations for thallium.In the second half of the dissertation, we consider \\dark force\" extensions tothe the SM. We introduce \\dark forces\" by considering the parity-odd as well assimultaneous parity-and time-reversal-violating interactions between atomic electronsand nucleons. Here we hypothesize the exchange of a \\dark sector\" light gauge-bosonparticle between atomic electrons and nucleons, as the source of the \\dark force\".Furthermore, using the latest experimental upper limits on mercury EDM and errorbars on the cesium PNC experiments, we place constraints on the coupling strengthsof such \\dark forces\" with ordinary matter.","abstract_html":"The overarching goal of this dissertation is to examine constraints on extensions tothe Standard Model (SM) through atomic-structure computations. More specifically,atomic parity-nonconserving (PNC) amplitudes and intrinsic electric dipole moments(EDM) are examined for sources of physics beyond the SM. Precision calculationsof these properties in the trivalent thallium atom, will help set new constraints onsearches beyond the SM.To this end, the first half of the dissertation is devoted to improving atomic structurecalculations. In particular, we numerically investigate the effectivenessof two convergence methods for coupled-cluster (CC) method. Further we explorethe feasibility of transferring high-precision CC methods, developed for monovalentatoms, to trivalent systems. Here we showcase calculations of various properties of thetrivalent atomic boron as a prototype for future precision computations for thallium.In the second half of the dissertation, we consider \\dark force" extensions tothe the SM. We introduce \\dark forces" by considering the parity-odd as well assimultaneous parity-and time-reversal-violating interactions between atomic electronsand nucleons. Here we hypothesize the exchange of a \\dark sector" light gauge-bosonparticle between atomic electrons and nucleons, as the source of the \\dark force".Furthermore, using the latest experimental upper limits on mercury EDM and errorbars on the cesium PNC experiments, we place constraints on the coupling strengthsof such \\dark forces" with ordinary matter.","abstract_has_math":false,"creators":["Gharibnejad, Heman"],"institution":null,"degree_name":null,"degree_level":"Doctorate Degree","degree_discipline":null,"degree_department":null,"school":null,"contributors":[],"advisors":["Derevianko, Andrei"],"committee_chairs":[],"committee_members":["Safronova, Alla","Weinstein, Jonathan","Geraci, Andrew","Varganov, Sergey"],"year":2014,"date_issued":"2014","date_published":"2014","updated_at":"2026-07-27T21:45:57Z","subjects":["Atomic/Molecular Optical","Atomic Parity Violation","Coupled Cluster","Dark Force","Exchange of light Gauge-Bosons","Permenant Electric Dipole Moment"],"languages":[],"rights":["In Copyright(All Rights Reserved)"],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"http://hdl.handle.net/11714/2964","outbound_label":"Handle","outbound_source":"dc:identifier.uri"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor.advisor","label":"Advisor","values":["Derevianko, Andrei"]},{"key":"dc:contributor.committeemember","label":"Committee Member","values":["Safronova, Alla","Weinstein, Jonathan","Geraci, Andrew","Varganov, Sergey"]},{"key":"dc:creator","label":"Author","values":["Gharibnejad, Heman"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.accessioned","label":"Dc Date Accessioned","values":["2018-04-27T22:30:35Z"]},{"key":"dc:date.available","label":"Dc Date Available","values":["2018-04-27T22:30:35Z"]},{"key":"dc:date.issued","label":"Date","values":["2014"]},{"key":"dc:type","label":"Dc Type","values":["Dissertation"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Doctorate Degree"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Atomic/Molecular Optical","Atomic Parity Violation","Coupled Cluster","Dark Force","Exchange of light Gauge-Bosons","Permenant Electric Dipole Moment"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:rights","label":"Dc Rights","values":["In Copyright(All Rights Reserved)"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier.uri","label":"Identifier URI","values":["http://hdl.handle.net/11714/2964"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["The overarching goal of this dissertation is to examine constraints on extensions tothe Standard Model (SM) through atomic-structure computations. More specifically,atomic parity-nonconserving (PNC) amplitudes and intrinsic electric dipole moments(EDM) are examined for sources of physics beyond the SM. Precision calculationsof these properties in the trivalent thallium atom, will help set new constraints onsearches beyond the SM.To this end, the first half of the dissertation is devoted to improving atomic structurecalculations. In particular, we numerically investigate the effectivenessof two convergence methods for coupled-cluster (CC) method. Further we explorethe feasibility of transferring high-precision CC methods, developed for monovalentatoms, to trivalent systems. Here we showcase calculations of various properties of thetrivalent atomic boron as a prototype for future precision computations for thallium.In the second half of the dissertation, we consider \\dark force\" extensions tothe the SM. We introduce \\dark forces\" by considering the parity-odd as well assimultaneous parity-and time-reversal-violating interactions between atomic electronsand nucleons. Here we hypothesize the exchange of a \\dark sector\" light gauge-bosonparticle between atomic electrons and nucleons, as the source of the \\dark force\".Furthermore, using the latest experimental upper limits on mercury EDM and errorbars on the cesium PNC experiments, we place constraints on the coupling strengthsof such \\dark forces\" with ordinary matter."]},{"key":"dc:format","label":"Dc Format","values":["PDF"]},{"key":"dc:title","label":"Title","values":["Computational Atomic Structure and Search for New Physics"]}]}],"canonical_facts":{"dc:contributor.advisor":["Derevianko, Andrei"],"dc:contributor.committeemember":["Safronova, Alla","Weinstein, Jonathan","Geraci, Andrew","Varganov, Sergey"],"dc:creator":["Gharibnejad, Heman"],"dc:date.accessioned":["2018-04-27T22:30:35Z"],"dc:date.available":["2018-04-27T22:30:35Z"],"dc:date.issued":["2014"],"dc:description.abstract":["The overarching goal of this dissertation is to examine constraints on extensions tothe Standard Model (SM) through atomic-structure computations. More specifically,atomic parity-nonconserving (PNC) amplitudes and intrinsic electric dipole moments(EDM) are examined for sources of physics beyond the SM. Precision calculationsof these properties in the trivalent thallium atom, will help set new constraints onsearches beyond the SM.To this end, the first half of the dissertation is devoted to improving atomic structurecalculations. In particular, we numerically investigate the effectivenessof two convergence methods for coupled-cluster (CC) method. Further we explorethe feasibility of transferring high-precision CC methods, developed for monovalentatoms, to trivalent systems. Here we showcase calculations of various properties of thetrivalent atomic boron as a prototype for future precision computations for thallium.In the second half of the dissertation, we consider \\dark force\" extensions tothe the SM. We introduce \\dark forces\" by considering the parity-odd as well assimultaneous parity-and time-reversal-violating interactions between atomic electronsand nucleons. Here we hypothesize the exchange of a \\dark sector\" light gauge-bosonparticle between atomic electrons and nucleons, as the source of the \\dark force\".Furthermore, using the latest experimental upper limits on mercury EDM and errorbars on the cesium PNC experiments, we place constraints on the coupling strengthsof such \\dark forces\" with ordinary matter."],"dc:format":["PDF"],"dc:identifier.uri":["http://hdl.handle.net/11714/2964"],"dc:rights":["In Copyright(All Rights Reserved)"],"dc:subject":["Atomic/Molecular Optical","Atomic Parity Violation","Coupled Cluster","Dark Force","Exchange of light Gauge-Bosons","Permenant Electric Dipole Moment"],"dc:title":["Computational Atomic Structure and Search for New Physics"],"dc:type":["Dissertation"],"thesis:degree_level":["Doctorate Degree"]},"updated_at":"2026-07-27T21:45:57Z"}