超対称性と非平衡量子動力学

• Material Type: 博士論文
• Title: 超対称性と非平衡量子動力学
• Author/Editor: Campbell, Christopher
• Author Heading: Campbell, Christopher
• Publication Date: 2022-12-31
• Publication Date (W3CDTF): 2022-12-31
• Alternative Title: Supersymmetry and Nonequilibrium Quantum Dynamics
• Degree grantor/type: Okinawa Institute of Science and Technology Graduate University
• Date Granted: 2022-12-31
• Date Granted (W3CDTF): 2022-12-31
• Dissertation Number: 甲第115号
• Degree Type: Doctor of Philosophy
• Text Language Code: eng
• Target Audience: 一般
• Note (General): In this thesis I present two studies that use ideas and concepts from supersymmetric quantum mechanics to understand and control the nonequilibrium dynamics of a quantum many-body system. The two protocols I study involve the quenching of a spin-polarized Fermi gas and the adiabatic control of single particle states during the expansion of an infinite square well over a finite time interval. In the first study, I explore the survival probability and the work probability distribution for quenches within a hierarchy of potentials created using supersymmetric factorization methods. I show that in this setting one can take advantage of the degeneracy between supersymmetric potentials in order to find simplified expressions for these quantities. I also show that many-body revivals in these systems exist and are robust even at finite temperatures.For the second study I explore a shortcut to adiabaticity (STA) based on counterdiabatic driving for the single particle states of the supersymmetric partner potentials of the infinite square. By calculating the fidelity, quantum speed limit time and the cost of driving a system, I compare the efficiency of the shortcuts between the ground state wavefunctions of three supersymmetric potentials and three wavefunctions that are isospectral to one another. The use of a supersymmetric setting allows me to distinguish between the dynamical effects stemming from the energy spectrum and from the distance between the states in Hilbert space. I also show that in the isospectral case one can develop an intertwining relationship between the counterdiabatic driving terms using the operators of their single particle Hamiltonians.
• DOI: 10.15102/1394.00002633; https://doi.org/10.15102/1394.00002633
• Persistent ID (NDL): info:ndljp/pid/12770183; https://dl.ndl.go.jp/pid/12770183
• Collection: 障害者向け資料
• Collection (Materials For Handicapped People:1): テキストデータ
• Collection (particular): 国立国会図書館デジタルコレクション > デジタル化資料 > 博士論文; https://dl.ndl.go.jp/collections/A00014
• Acquisition Basis: 博士論文（自動収集）
• Date Accepted (W3CDTF): 2023-04-07T23:08:44+09:00
• Format (IMT): application/pdf
• Access Restrictions: 国立国会図書館内限定公開
• Service for the Digitized Contents Transmission Service: 図書館・個人送信対象外
• Availability of remote photoduplication service: 可
• Periodical Title (URI): http://dx.doi.org/10.15102/1394.00002633; https://oist.repo.nii.ac.jp/records/2912
• Data Provider (Database): 国立国会図書館 : 国立国会図書館デジタルコレクション; https://dl.ndl.go.jp

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2023-10-11 再収集

2023-10-11 再収集