| 2024 |
| 1. |
Ferromagnetic instability for the SU(N) Hubbard model, SU(N) physics in quantum many-body systems: theory, experiment, and numerics "SUN2024",
2024/7/8-12, Sendai, J. Fujii and A. Koga |
| 2. |
Majorana-mediated spin transport in the Kitaev model at finite temperatures, Internaltional Symposium on Quantum Electronics "TSQS2024",
2024/2/13-16, Ito International Research Center,Tokyo, A. Koga |
| 2023 |
| 3. |
Hyperuniformity in the two-dimensional periodic and quasiperiodic lattices, International conference on complex orders in condensed matter: aperiodic order, local order, electronic order, hidden order,
2023/9/24-29, Evian, France, A. Koga, and S. Sakai |
| 4. |
Hyperuniformity in the two-dimensional periodic and quasiperiodic lattices, Ihe 15th International Conference on Quasicrystals (ICQ15),
2023/6/18-26, Tel Aviv, Israel, A. Koga, and S. Sakai |
| 5. |
Hexagonal metallic-mean tilings as aperiodic approximants of the honeycomb lattice, Ihe 15th International Conference on Quasicrystals (ICQ15),
2023/6/18-26, Tel Aviv, Israel, T. Matsubara, A. Koga, and T. Dotera |
| 2022 |
| 6. |
Majorana-mediated spin transport in the S=1/2 Kitaev model at finite temperatures, International Conference on Strongly Correlated Electron Systems (SCES2022),
2022/7/24-29, Amsterdam, The Netherlands, H. Taguchi, Y. Murakami, and A. Koga |
| 7. |
Majorana-mediated spin transport in the S=1/2 Kitaev model at finite temperatures, 11th International Conference on Highly Frustrated Magnetism 2022 (HFM22),
2022/6/20-25, Paris, France, A. Koga |
| 8. |
A 6-fold golden-mean tiling with four tiles, 10th International Conference on Aperiodic Crystals (APERIODIC2022),
2022/6/20-24, Sapporo, Japan, S. Coates, T. Matsubara, A.Koga |
| 2019 |
| 9. |
Ferromagnetic Instability for the Single-band Hubbard Model in the Strong-Coupling Regime, 14th Asia-Pacific Physics Conference (APPC2019),
2019/11/17-21, Borneo Convention Centre Kuching, Malaysia, A. Koga |
| 10. |
Low-temperature Properties of the generalized Kitaev Model, International Conference on Strongly Correlated Electron Systems (SCES2019),
2019/9/23-28, Okayama, Japan, A. Koga |
| 2018 |
| 11. |
Ground-state and Finite-temperature Properties of the Bilayer Kitaev model, International Conference on Highly Frustrated Magnetism 2018 (HFM2018),
2018/7/10-14, UC Davis, US, H. Tomishige, J. Nasu, A. Koga |
| 12. |
Ground-state and Finite-temperature Properties of the Bilayer Kitaev model, The 6th International Conference on Superconductivity and Magnetism (ICSM2018),
2018/4/29-5/4, Beldibi/Antalya, Turkey, A. Koga, H. Tomishige, and J. Nasu |
| 2017 |
| 13. |
Role of the spin-orbit coupling in the Kugel-Khomskii model on the honeycomb lattice, Inter-institutional meeting in Interdisciplinary Theoretical and Computational Physical Science (ITCPS2017),
2017/10/4-6, Tokyo Institute of Technology, Tokyo, A. Koga |
| 14. |
Role of the spin-orbit coupling in the Kugel-Khomskii model on the honeycomb lattice, J-Physics 2017: International Workshop on Multipole Physics and Related Phenomena,
2017/9/24-28, Hachimantai, Iwate, A. Koga, S. Nakauchi, and J. Nasu |
| 15. |
Magnetic properties in the Penrose-Hubbard model, 28th International Conference on Low Temperature Physics (LT28),
2017/8/9-16, Gothenburg, Sweden, A. Koga and H. Tsunetsugu |
| 16. |
Ground-state phase diagram in the Kugel-Khomskii model with finite spin-orbit interactions, International Conference on Strongly Correlated Electron Systems (SCES2017),
2017/7/17-21, Prague, Czech, A. Koga, S. Nakauchi, and J. Nasu |
| 17. |
Ground-state phase diagram in the Kugel-Khomskii model with finite spin-orbit interactions, International Conference on Topological Materials Science 2017 (TopoMat2017),
2017/5/9-13, Tokyo Institute of Technology, Japan, A. Koga, S. Nakauchi, and J. Nasu |
| 2015 |
| 18. |
Superconductivity in the degenerate Hubbard model, TMU International Symposium 2015 "New Quantum Phases Emerging from Novel Crystal Structure",
2015/9/24-25, Tokyo Metropolitan University, Japan, A. Koga |
| 2013 |
| 19. |
Nonequilibrium transport through a quantum dot coupled to normal and superconducting leads, The International Conference on Strongly Correlated Electron Systems (SCES13),
2013/8/5-9, Tokyo, Japan, A. Koga |
| 20. |
Valence Fluctuations in the Extended Periodic Anderson Model at Finite Temperatures, The 12th Asia Pacific Physics Conference (APPC12),
2013/7/14-19, Chiba, Japan, Y. Kojima and A. Koga |
| 21. |
Transport properties through a quantum dot coupled to normal and superconducting leads, The New Generation in Strongly Correlated Electron Systems (NGSCES2013),
2013/7/1-5, Sestri Levante, Italy, A. Koga |
| 22. |
Transport properties through a quantum dot coupled to normal and superconducting lead, International Conference Optical and Electrical Spectroscopy of Single Quantum Dots (SQD13),
2013/3/10-12, Mallorca, Spain, A. Koga |
| 2012 |
| 23. |
Transport properties through a quantum dot coupled to normal and superconducting leads, International Symposium Nanoscience and Quantum Physics (nanoPHYS'12),
2012/12/17-19, Tokyo, Japan, A. Koga |
| 24. |
Metal-Insulator transition in optical lattice system with site-dependent interactions, International Conference on Superconductivity and Magnetism (ICSM 2012),
2012/4/29-5/4, Istanbul, Turkey, A. Koga, T. Saitou, and A. Yamamoto |
| 2011 |
| 25. |
Superfluid state in the periodic Anderson model with attractive interactions, International Conference on Strongly Correlated Electron Systems (SCES 2011),
2011/8/29-9/3, Cambridge, UK, A. Koga and P. Werner |
| 26. |
Superfluid state in the periodic Anderson model with attractive interactions, International Symposium Nanoscience and Quantum Physics "nanoPHYS'11",
2011/1/26-28, Tokyo, Japan, A. Koga |
| 2010 |
| 27. |
Polarized superfluid state in a fermionic optical lattice, International Conference on Frustrated Spin Systems, Cold Atoms, Nanomaterials,
2010/7/14-16, Hanoi, Vietnam, A. Koga and P. Werner |
| 28. |
Polarized superfluid state in a fermionic optical lattice, International Conference on Strongly Correlated Electron Systems (SCES 2010),
2010/6/27-7/2, Santa Fe, USA, A. Koga and P. Werner |
| 2009 |
| 29. |
Phase Transitions in the Half-filled Hubbard Model on the Triangular Lattice, The 8th International Symposium on Crystalline Organic Metals, Superconductors and Ferromagnets (ISCOM2009) "The 64th Yamada Conference",
2009/9/12-17, Niseko, Japan, T. Yoshioka, A. Koga, and N. Kawakami |
| 30. |
Analysis of Superfluid State of Ultracold Fermions with Attractive Interactions in Two-dimensional Optical Lattices, 9th International Conference on Materials and Mechanisms of Superconductivity (M2S-IX),
2009/9/7-12, Tokyo, Japan, Y. Fujihara, A. Koga, and N. Kawakami |
| 31. |
Quantum phase transitions in the Hubbard model on the triangular lattice, Quantum Criticality & Novel Phases (QCNP2009),
2009/8/2-5, Dresden, Germany, T. Yoshioka, A. Koga, and N. Kawakami |
| 2008 |
| 32. |
Supersolid state in a fermionic optical lattice system, The 25th International Conference on Low Temperature Physics (LT25),
2008/8/7-13, Amsterdam, Netherlands, A. Koga, T. Higashiyama, K. Inaba, S. Suga, and N. Kawakami |
| 2007 |
| 33. |
Phase transitions in the extended periodic Anderson model, The International Conference on Strongly Correlated Electron Systems (SCES2007),
2007/5/13-18, Houston, USA, A. Koga, N. Kawakami, R. Peters, and Th. Pruschke |
| 2006 |
| 34. |
Mott transitions in the Hubbard model on the planar pyrochlore lattice, International Conference on Magnetism,
2006/8/20-25, Kyoto, Japan, A. Koga, T. Yoshioka, N. Kawakami, and H. Yokoyama |
| 35. |
Electron correlations in the Hubbard model on the planar pyrochlore lattice, 8th International Conference on Materials and Mechanisms of Superconductivity and High-Temperature Superconductor,
2006/7/9-14, Dresden, Germany, A. Koga, T. Yoshioka, N. Kawakami and H. Yokoyama |
| 2005 |
| 36. |
Variational Monte Carlo Study of Two Dimensional Multi-Orbital Hubbard Model, The 24th International Conference on Low Temperature Physics (LT24),
2005/8/10-17, Orlando, Florida, USA, A. Koga, N. Kawakami, H. Yokoyama, and K. Kobayashi |
| 2004 |
| 37. |
Mott transitions in the multiorbital systems, The international conference on Strongly Correlated Electron Systems (SCES 2004),
2004/7/26-30, Karlsruhe, Germany, A. Koga, N. Kawakami, T.M. Rice, and M. Sigrist |
| 2002 |
| 38. |
Effects of degenerate orbitals on the Anderson lattice model, The 3rd International Symposium on Advanced Science Research (ASR2002) "Advances in the Physics of f-electron systems",
2002/11/12-14, JAERI Tokai, Ibaraki, A. Koga and N. Kawakami |
| 39. |
Quantum phase transitions in a frustrated orthogonal-dimer S=1 spin system, The 23rd International Conference on Low Temperature Physics (LT23),
2002/8/20-27, International Conference Center, Hiroshima, A. Koga and N. Kawakami |
| 2001 |
| 40. |
Hole-doping effects on a S=1 ladder system, The international conference on Strongly Correlated Electron System (SCES 2001),
2001/8/6-10, Ann Arbor, Michigan, USA, A. Koga, N. Kawakami and M. Sigrist |
| 2000 |
| 41. |
Quantum phase transitions for the three-dimensional orthogonal-dimer spin system, Conference on Computational Physics 2000 (CCP2000) "New Challenges for the New Millennium",
2000/12/3-8, Gold Coast, Queensland, Australia, A. Koga and N. Kawakami |
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