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アイテム
超対称性と非平衡量子動力学
https://doi.org/10.15102/1394.00002633
https://doi.org/10.15102/1394.00002633798cea70-a876-4dae-b16e-681c810d3e5d
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CampbellFullText (3.5 MB)
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CampbellFinalExamAbstract (42.9 kB)
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| Item type | 学位論文 / Thesis or Dissertation(1) | |||||||
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| 公開日 | 2023-03-30 | |||||||
| タイトル | ||||||||
| タイトル | 超対称性と非平衡量子動力学 | |||||||
| 言語 | ja | |||||||
| タイトル | ||||||||
| タイトル | Supersymmetry and Nonequilibrium Quantum Dynamics | |||||||
| 言語 | en | |||||||
| 言語 | ||||||||
| 言語 | eng | |||||||
| 資源タイプ | ||||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_db06 | |||||||
| 資源タイプ | doctoral thesis | |||||||
| ID登録 | ||||||||
| ID登録 | 10.15102/1394.00002633 | |||||||
| ID登録タイプ | JaLC | |||||||
| アクセス権 | ||||||||
| アクセス権 | open access | |||||||
| アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||||
| 著者 (英) |
Campbell, Christopher
× Campbell, Christopher
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| 抄録 | ||||||||
| 内容記述タイプ | Other | |||||||
| 内容記述 | 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. |
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| 口頭試問日 | ||||||||
| 値 | 2022-11-08 | |||||||
| 学位授与年月日 | ||||||||
| 学位授与年月日 | 2022-12-31 | |||||||
| 学位名 | ||||||||
| 学位名 | Doctor of Philosophy | |||||||
| 学位授与番号 | ||||||||
| 学位授与番号 | 甲第115号 | |||||||
| 学位授与機関 | ||||||||
| 学位授与機関識別子Scheme | kakenhi | |||||||
| 学位授与機関識別子 | 38005 | |||||||
| 学位授与機関名 | Okinawa Institute of Science and Technology Graduate University | |||||||
| 著者版フラグ | ||||||||
| 出版タイプ | VoR | |||||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||||
| 権利 | ||||||||
| 権利情報 | © 2022 The Author. | |||||||
