Recent News
- 日本物理学会2023年春期大会 令和5年（2023年）3月22日（水）～25日（土）
- APS March meeting 2023
- Graphene, silicene and martini
- Array of Martini glasses with topology
- Novel critical states in random U(1) MO models in 2D
- Anyon superconductivity revisited : talk by Koji Kudo
- Topological strucure can be fragile against interactions
- Seminar by Tomonari Mizoguchi
- Reduction of non-Hermitian 1D topology with interaction
- TTQM2022
- Bulk-edge correspondence in electric circuits of topological pump
- 日本物理学会2022年秋
- Adiabatic connection with spin
- BEC seminar :工藤耕司氏 (Penn State) Aug.10, 2022
- “b 2– 4 ac” formula with rotation symmetry
- Random flatbands are special
- APS March meeting 2022
- 日本物理学会2022年春
- Heat escapes fast due to bulk-edge correspondence
- Exact correlation of correlation
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日本物理学会2023年春期大会 令和5年（2023年）3月22日（水）～25日（土）
25pA1-3 259 例外点における強相関効果 吉田恒也, 初貝安弘A 京大理, 筑波大数理A 領域1 22aD1-5 2023 2点修飾ハニカム格子における平方根高次トポロジカル絶縁体 松本大輝, 溝口知成, 初貝安弘 筑波大数理 領域4 24pPSD-5 649 固有値の非線形性とカイラルゼロモード 磯部拓磨, 吉田恒也A, 初貝安弘 筑波大数理, 京大理A 領域4 24pPSD-7 130...
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APS March meeting 2023
APS March meeting, March 5–10, 2023 | Las Vegas, Nevada March 20–22, 2023 | Virtual
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Graphene, silicene and martini
Chemisorption on graphene and silicene may realize Martini type π-electron network. It implies specific band dispersion. We propose potential materialization by using the molecular orbital constr...
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Array of Martini glasses with topology
Taking a square root is not trivial. The Dirac equation is invented by the square root of the Kleind-Gordon equation. Then the lattice analog of the operation implies non-trivial topology and edge/cor...
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Novel critical states in random U(1) MO models in 2D
Using a molecular orbital (MO) construction scheme of the flat band which we are proposing, we found novel random critical states in a series of flat band systems away from the flat band energy. The M...
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Anyon superconductivity revisited : talk by Koji Kudo
Next Wednesday, Feb. 15 (2023), Koji Kudo (Penn state) visits us and will be telling on anyon superconductivity. The talk is hybrid. [Detail] For the zoom link, contact me (email). Speaker: Koji Kudo...
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Topological strucure can be fragile against interactions
Topological protection of singularities for the non-Hermitian problem is one of the recent focuses in condensed matter physics. Exceptional points and rings with symmetry constraints are typical examp...
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Seminar by Tomonari Mizoguchi
Coming Wed. afternoon, 13:00, Dec.14, Tomonari Mizoguchi (Univ. Tsukuba) will be telling us about his work in collaboration with N. Okuma (Kyoto Univ.). The seminar is in a hybrid format. Please conta...
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Reduction of non-Hermitian 1D topology with interaction
Topological protection for topological systems may change by the inclusion of particle-particle interaction, which is known as "reduction phenomena." Here we have pointed out its possibilities for 1-d...
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Bulk-edge correspondence in electric circuits of topological pump
One of the recent wisdom for topological phases is the use of a classical system as a quantum simulator. The Hofstadter butterfly associated with topological phase transitions is realized in electric ...
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日本物理学会2022年秋
講演番号 登録番号 タイトル 著者 所属 領域 13pPSB-31 982 固有値の非線形性を持つ系のバルク境界対応 磯部拓磨, 吉田恒也, 初貝安弘 筑波大数理 領域4 15aH131-8 887 一般化された回転対称性のある系での例外点と判別式指標 若尾洋正, 吉田恒也, 初貝安弘 筑波大数理 領域4 15aH131-9 1257 一次元点ギャップトポロジーに対する強相関効果 吉田恒也, 初貝...
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Adiabatic connection with spin
Adiabatic connection of the gapped many-body states is a conceptual background of the topological phases. Historical and more than successful examples are given by various fractional quantum Hall stat...
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BEC seminar :工藤耕司氏 (Penn State) Aug.10, 2022
On Aug.10 (Wed) 2022 at 11:am Japan time, Koji Kudo at Penn State will be telling us about his recent study by a title : "Exactly solvable model for non-Abelian quasiparticle states." Join us on zoom....
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“b 2– 4 ac” formula with rotation symmetry
The discriminant is a generalization of the "b 2- 4 ac" formula that everybody knows, which tells us the degeneracy of the (secular) equation. Then it is natural the discriminant is useful for the stu...
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Random flatbands are special
Recent wisdom for the construction of flat bands is applicable even with randomness. Characterization of special features of the random flat bands has been successfully done by using machine learning....
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APS March meeting 2022
APS March meeting, March 14-18 2022, Chicago USA
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日本物理学会2022年春
講演番号 登録番号 タイトル 著者 所属 領域 15aE22-8 529 拡張ボースハバード模型におけるトポロジカルポンプとバルクエッジ対応 久野義人A, B, 初貝安弘A 筑波大数理A, 秋田大B 領域1 15aT24-10 2043 カゴメ格子上の熱伝導 牧野柊星, 福井隆裕, 吉田恒也A, 初貝安弘A 茨城大, 筑波大A 領域4 17pPSE-3 496 光メタマテリアルにおけ...
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Heat escapes fast due to bulk-edge correspondence
Analyzing a diffusion equation of alternative metals, rapid heat conduction to the heat bath due to edge states is predicted. The edge states are predicted by the bulk topological invariant as a typic...
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Exact correlation of correlation
Once one admits the electronic state is described by the molecular-orbitals (MOs), the system has flat bands when the number of MOs is less than the total number of atoms. Then it is natural the elect...
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