### International conferences/workshops

- “Semiclassical analysis of frustrated Bose gases in optical kagome lattices”, ○
*Yusuke Ozaki*, Daisuke Yamamoto, and*Ippei Danshita*, American Physical Society March Meeting 2021, Online, March 15, 2021, Oral. - “Instability of a dark soliton by quantum fluctuations in a one-dimensional Bose gas in an optical lattice”, ○
,*Yusuke Ozaki*,**Kazuma Nagao**, and Kenichi Kasamatsu, EU-USA-Japan International Symposium on Quantum Technology, Kyoto Brighton Hotel, Kyoto, Japan, December 2019, Poster.**Ippei Danshita** - “Towards quantum simulation of Kondo effects with ultracold alkali-earth-like Fermi gases”, ○
*Shimpei Goto*, Koki Ono, Shunya Higomoto,*Ippei Danshita*, and Yoshiro Takahashi, EU-USA-Japan International Symposium on Quantum Technology, Kyoto Brighton Hotel, Kyoto, Japan, December 2019, Poster. - “Instability of a dark soliton by quantum fluctuations in a one-dimensional lattice Bose gas”, ○
,*Yusuke Ozaki*,**Kazuma Nagao**, and Kenichi Kasamatsu, The 4th Kyoto-Beijing-Tokyo Workshop on Ultracold Atomic Gases, Yukawa Institute for Theoretical Physics, Kyoto University, Kyoto, Japan, September 2019, Poster.**Ippei Danshita** - “Kondo dynamics in ultracold alkali-earth-like atoms at finite temperatures”,
and*◯Shimpei Goto*, The 4th Kyoto-Beijing-Tokyo Workshop on Ultracold Atomic Gases, Yukawa Institute for Theoretical Physics, Kyoto University, Kyoto, Japan, September 2019, Invited.**Ippei Danshita** - “Kondo Transport of Two-Orbital Fermi gases”,
and ○**Shimpei Goto**, The 28th Annual International Laser Physics Workshop, Hwabaek International Convention Center, Gyeongju, Korea, July 2019, Invited.*Ippei Danshita* - “Semi-classical dynamics of a dark soliton in a one-dimensional lattice Bose gas”, ○
,*Yusuke Ozaki*,**Kazuma Nagao**, and Kenichi Kasamatsu, The 28th Annual International Laser Physics Workshop, Hwabaek International Convention Center, Gyeongju, Korea, July 2019, Oral.**Ippei Danshita** - “Kondo transport dynamics of alkaline-earth-like atoms at finite temperatures”,
, The 5th Conference on Condensed Matter Physics, Hentique Hotels & Resorts, Liyang, China, June 2019, Invited.**Ippei Danshita** - “Accurate real-time dynamics of the Kondo impurity model at finite temperatures”,
, Emergent phenomena in ultracold atoms: merging topology, interaction, and dynamics, Kavli Institute for Theoretical Sciences, University of Chinese Academy of Science, Beijing, China, June 2019, Invited.**Ippei Danshita** - “Finite Temperature Dynamics of the Kondo Model in Ultracold Alkaline-Earth Atoms”, ○
and**Shimpei Goto***Ippei Danshita*, 50th Annual Meeting of the APS Division of Atomic, Molecular and Optical Physics, Wisconsin Center, Milwaukee, Wisconsin, USA, May 2019, Oral. -
“Diagnosing Kondo Effects of Fermionic Alkaline-earth Atoms through a Dipole Oscillation”, ○

and**Shimpei Goto***Ippei Danshita*, Quantum Simulation of Novel Phenomena with Ultracold Atoms, Hong Kong University of Science and Technology, Hong Kong, May 2019, Poster. -
“Bistability of Bose-Einstein Condensates with a Local Loss Term and Pinning Potentials”, ○

and**Masaya Kunimi***Ippei Danshita*, Quantum Simulation of Novel Phenomena with Ultracold Atoms, Hong Kong University of Science and Technology, Hong Kong, May 2019, Poster. -
“Semi-classical Dynamics of a Dark Soliton in One-dimensional Bose Gases in an Optical Lattice”, ○

,**Yusuke Ozaki**,**Kazuma Nagao***Ippei Danshita*, and Kenichi Kasamatsu, Quantum Simulation of Novel Phenomena with Ultracold Atoms, Hong Kong University of Science and Technology, Hong Kong, May 2019, Poster. - “Far-from-equilibrium dynamics of the Bose-Hubbard model: Quantum and classical simulations”,
*Ippei Danshita*, 2018 International Workshop on Quantum Information, Quantum Computing and Quantum Control, Shanghai University, Shanghai, China, November 2018, Invited. - “Quench Dynamics of the Bose-Hubbard Model: Digital Classical Simulation versus Analog Quantum Simulation”,
*Ippei Danshita*, The 3rd Beijing-Tokyo Workshop on Ultracold Atomic Gases, IAS Tsinghua University, Beijing, China, August 2018, Invited. - “Response of the Higgs amplitude mode of superfluid Bose gases in a three dimensional optical lattice: effects of fluctuations and a trapping potential”, ○
*Kazuma Nagao*, Yoshiro Takahashi, and*Ippei Danshita*, American Physical Society March Meeting 2018, Los Angeles Convention Center, Los Angeles, California, USA, March 2018, Oral. - “Cooling schemes for ultracold gases in bilayer optical lattices”, ○
*Ippei Danshita*and*Shimpei Goto*, American Physical Society March Meeting 2018, Los Angeles Convention Center, Los Angeles, California, USA, March 2018, Oral. - “Study of decay of superflow of a Bose-Einstein condensate in a ring trap”, ○
*Masaya Kunimi*and*Ippei Danshita*, Finite Temperature Non-equilibrium Superfluid Systems 2018, Edgewater Hotel, Wanaka, New Zealand, February 2018, Poster. - “Cooling schemes for two-component fermions in bilayer optical lattices”, ○
*Shimpei Goto*and*Ippei Danshita*, Finite Temperature Non-equilibrium Superfluid Systems 2018, Edgewater Hotel, Wanaka, New Zealand, February 2018, Poster. - “A proposal for experimental realization of a Sachdev-Ye-Kitaev model with ultracold gases”,
*Ippei Danshita*, Black Holes, Quantum Chaos, and Solvable Quantum Systems, Tsinghua Sanya International Mathematics Forum (TSIMF), Sanya, Hainan, China, January 2018, Invited. - “Engineering dissipation in strongly correlated ultracold gases”,
*Ippei Danshita*, Ultracold Atomic Gases and Quantum Control, Shanghai University, Shanghai, China, November 2017, Invited. - “Superflow decay of a Bose-Einstein condensate in a ring trap”, ○
*Masaya Kunimi*and*Ippei Danshita*, Novel Quantum States in Condensed Matter 2017, Yukawa Institute for Theoretical Physics, Kyoto University, Japan, November 2017, Poster. - “Response of the Higgs amplitude mode of ultracold Bose gases in 3D optical lattices”, ○
*Kazuma Nagao*, Yoshiro Takahashi, and*Ippei Danshita*, Novel Quantum States in Condensed Matter 2017, Yukawa Institute for Theoretical Physics, Kyoto University, Japan, November 2017, Poster. - “Application of tensor-network techniques to far-from-equilibrium dynamics of ultracold gases”,
*Ippei Danshita*, Tensor Networks from Simulation to Holography, DESY, Hamburg, Germany, October 2017, Invited. - “Localized Higgs modes of a superfluid in an optical lattice”,
*Ippei Danshita*, The 2nd Tokyo-Beijing Workshop on Ultracold Atoms, University of Tokyo, Tokyo, Japan, October 2017, Invited. - “Lifetime of superflow of a Bose-Einstein condensate in a ring trap”, ○
*Masaya Kunimi*and*Ippei Danshita*, Quantum Thermodynamics: Thermalization and Fluctuations, Yukawa Institute for Theoretical Physics, Kyoto University, Japan, October 2017, Poster. - “Response of the Higgs amplitude mode of ultracold bosons in 3D optical lattices”, ○
*Kazuma Nagao*, Yoshiro Takahashi, and*Ippei Danshita*, Quantum Thermodynamics: Thermalization and Fluctuations, Yukawa Institute for Theoretical Physics, Kyoto University, Japan, October 2017, Poster. - “Dynamical cooling scheme for ultracold fermions in optical lattices”, ○
*Shimpei Goto*and*Ippei Danshita*, Quantum Thermodynamics: Thermalization and Fluctuations, Yukawa Institute for Theoretical Physics, Kyoto University, Japan, October 2017, Poster. - “Incommensurate spiral magnetic order in the Hubbard model on anisotropic triangular lattice”,
*Shimpei Goto*, Susumu Kurihara, and Daisuke Yamamoto, The 28th International Conference on Low Temperature Physics, Swedish Exhibition Centre, Gothenburg, Sweden, August 2017, Poster. - “Thermally activated phase slips of a Bose-Einstein condensate in a ring trap”, ○
*Masaya Kunimi*and*Ippei Danshita*, 48th Annual Meeting of the Division of Atomic, Molecular, and Optical Physics, Sacramento Convention Center, Sacramento, California, USA, June 2017, Oral. - “Creating and probing quantum black holes by using ultracold gases in optical lattices”,
*Ippei Danshita*, Quantum Gravity, String Theory, and Holography, YITP Kyoto University, Kyoto, Japan, April 2017, Invited. - “Creating and probing quantum black holes with ultracold gases in optical lattices”,
*Ippei Danshita*, Hangzhou Symposium for Young Researchers, Zhejiang University, Hangzhou, China, April 2017, Invited. - “A proposal for creating quantum black holes with ultracold gases in optical lattices”,
*Ippei Danshita*, Masanori Hanada, Masaki Tezuka, Fundamental Physics Using Atoms, Kyoto University, Nishikyo-ku, Kyoto, Japan, January 2017, Oral. - “Criticality emerging in a dark soliton near the discontinuous superfluid-insulator transition of binary Bose mixtures”,
*Ippei Danshita*, Topological effects in ultracold atoms, International Institute of Physics, Natal, Brazil, November 2016, Invited. - “Thermally activated phase slips of one-dimensional Bose gases in shallow optical lattices”, ○
*Masaya Kunimi*and*Ippei Danshita*, The 25th International Conference on Atomic Physics, COEX Convention Center, Seoul, Korea, July 2016, Poster. - “Response of the Higgs amplitude mode in the 3D Bose-Hubbard model”, ○
*Kazuma Nagao*, Yoshiro Takahashi, and*Ippei Danshita*, The 25th International Conference on Atomic Physics, COEX Convention Center, Seoul, Korea, July 2016, Poster. - “Higgs bound states of a relativistic superfluid in the presence of a single impurity”,
*Ippei Danshita*and Shunji Tsuchiya, 25th International Laser Physics Workshop, Yerevan, Armenia, July 2016, Invited. - “Fano resonance between Nambu-Goldstone modes and Higgs bound states in a superfluid”,
*I. Danshita*, T. Nakayama, T. Nikuni, and S. Tsuchiya, Ugo Fano Gold Medal & Ugo Fano Symposium, Marconi Hall, CNR Rome, Italy, December 2015, Invited. - “Interaction between the Higgs and Nambu-Goldstone modes of superfluid Bose gases in optical lattices”, ○
*Kazuma Nagao*and*Ippei Danshita*, Okinawa School in Physics: Coherent Quantum Dynamics, OIST, Okinawa, Japan, September 2015, Poster. - “Bound states of Higgs modes in a relativistic superfluid”,
*Ippei Danshita*, 12th US-Japan Seminar: Many body quantum systems from quantum gases to metrology and information processing, Monona Terrace, Madison, Wisconsin, USA, September 2015, Invited. - “Finite-temperature effects on damping of the Nambu-Goldstone and Higgs modes of superfluid Bose gases in optical lattices”, ○
*Kazuma Nagao*and*Ippei Danshita*, Finite-Temperature Non-Equilibrium Superfluid Systems, Hotel Haffner, Sopot, Poland, September 2015, Poster. - “Higgs bound states of superfluid Bose gases in optical lattices”,
*Ippei Danshita*, Takeru Nakayama, Tetsuro Nikuni, and Shunji Tsuchiya, Bose-Einstein Condensation 2015 – Frontiers in Quantum Gases, Hotel Eden Roc, Sant Feliu de Guixols, Spain, 2015, Poster. - “Damping of the Nambu-Goldstone and Higgs Modes of Superfluid Bose Gases in Optical Lattices”, ○
*Kazuma Nagao*and*Ippei Danshita*, The 24th Annual International Laser Physics Workshop, Courtyard by Marriott Hotel Shanghai Pudong, Shanghai, China, August 2015, Oral. - “Superfluid Bose-Bose Mixtures Obeying a Nonlinear Schrödinger Equation with Cubic and Quintic Nonlinearities”,
*Ippei Danshita*, Daisuke Yamamoto, and Yasuyuki Kato, The 24th Annual International Laser Physics Workshop, Courtyard by Marriott Hotel Shanghai Pudong, Shanghai, China, August 2015, Oral. - “Effects of potential barriers on collective modes of strongly correlated Bose gases in optical lattices”,
*Ippei Danshita*, Takeru Nakayama, Tetsuro Nikuni, and Shunji Tsuchiya, The 24th Annual International Laser Physics Workshop, Courtyard by Marriott Hotel Shanghai Pudong, Shanghai, China, August 2015, Poster. - “Higgs bound states and heavy solitons of Bose gases in optical lattices”,
*Ippei Danshita*, Frontiers in Quantum Simulation with Cold Atoms, INT University of Washington, Seattle, Washington, USA, April 2015, Oral. - “Quantum tricriticality and heavy solitary waves of binary Bose mixtures in optical lattices”,
*Ippei Danshita*, 579th Wilhelm and Else Heraeus Seminar “Quo vadis BEC? V”, Physikzentrum, Bad Honnef, Germany, December 2014, Invited. - “Superfluid-Mott insulator transitions of binary Bose mixtures in optical lattices”,
*Ippei Danshita*, Novel Quantum States in Condensed Matter 2014, YITP Kyoto University, Kyoto, Japan, December 2014, Oral. - “Bose-Bose mixtures in optical lattices: quantum tricriticality and a bright-like dark soliton”,
*I. Danshita*, D. Yamamoto, and Y. Kato, Coherent Control of Complex Quantum Systems, Okinawa Institute of Science and Technology, Kunigami, Okinawa, Japan, April 2014, Poster. - “Bright-like dark solitons and current-phase characteristics of superfluid Bose mixtures near the first-order Mott transition”,
*I. Danshita*, D. Yamamoto, and Y. Kato, American Physical Society March Meeting, Denver, Colorado, USA, March 2014, Oral. - “Binary Bose mixtures in optical lattices”,
*Ippei Danshita*, International Molecule-type Workshop on New Correlations in Exotic Nuclei and Advances of Theoretical Models, YITP Kyoto University, Kyoto, Japan, March 2014, Invited. - “Quantum phase slips of trapped superfluid Bose gases in one dimension”,
*I. Danshita*, The International Conference on Quantum Fluids and Solids 2013, Kunibiki Messe, Matsue, Shimane, Japan, August 2013, Poster. - “Detecting superflow decay via quantum phase slips in damped dipole oscillations of one-dimensional ultracold gases”,
*I. Danshita*, Disorder in Condensed Matter and Ultracold Atoms, Villa Monastero, Varenna, Italy, June 2013, Oral. - “Damping of dipole oscillations of one-dimensional Bose gases induced by quantum phase slips”,
*Ippei Danshita*, 44th Annual Meeting of the Division of Atomic, Molecular, and Optical Physics, Quebec City, Quebec, Canada, June 2013, Oral. - “Quantum phase slips in damped dipole oscillations of 1D ultracold gases”,
*Ippei Danshita*, The 11th US-Japan Joint Seminar on Quantum Electronics and Laser Spectroscopy “Ultimate Quantum Systems of Light- and Matter-Control and Applications”, Nara, Japan, April 2013, Poster. - “Time-evolving block decimation applied to ultracold gases in optical lattices”,
*Ippei Danshita*, Workshop on Computational Approaches to Nuclear Many-Body Problems and Related Quantum Systems, Wako, Saitama, Japan, February 2013, Invited. - “Dynamics of strongly correlated Bose gases in optical lattices”,
*Ippei Danshita*, FY 2012 Special Postdoctoral & Foreign Postdoctoral Researcher’s Poster Session of Research Results, Wako, Saitama, Japan, January 2013, Poster. - “Quantum nucleation of phase slips studied with TEBD”,
*Ippei Danshita*, Density Matrix Renormalization Group 101 Winter School, National Taiwan University, Taipei, Taiwan, December 2012, Oral. - “Polaron-paired counterflow superfluid of Bose-Fermi mixtures in optical lattices”,
*I. Danshita*and L. Mathey, 5th International Workshop on Ultracold Group II atoms, Koganei, Tokyo, September 2012, Poster. - “Strong suppression of transport due to quantum phase slips in 1D Bose gases”,
*I. Danshita*and A. Polkovnikov, The 23rd International Conference on Atomic Physics, Palaiseau, July 2012, Poster. - “Counterflow superfluid in one-dimensional Bose-Fermi mixtures in optical lattices”,
*I. Danshita*and L. Mathey, Workshop on Quantum Simulations with Ultracold Atoms, Trieste, July 2012, Poster. - “Superflow decay via quantum nucleation of phase slips in one-dimensional Bose gases”,
*Ippei Danshita*, International Conference on Frontiers of Cold Atoms and Related Topics, Hong Kong, May 2012, Poster. - “Dipolar bosons in optical lattices: critical velocity and anomalous hysteresis”,
*Ippei Danshita*, Research Frontiers in Ultra-Cold Atoms and Molecules: Unequal Mass Mixtures and Dipolar Molecules, Cambridge, USA, April 2012, Invited. - “Supercurrent decay via quantum nucleation of phase slips in one-dimensional lattice bosons”,
*I. Danshita*and A. Polkovnikov, American Physical Society March Meeting, Boston, Massachusetts, USA, March 2012, Oral. - “Quantum effects on Fermi-Pasta-Ulam recurrence in ultracold lattice bosons”,
*I. Danshita*, R. Hipolito, V. Oganesyan, and A. Polkovnkov American Physical Society March Meeting, Dallas, Texas, USA, March 2011, Oral. - “Stability and critical velocity of dipolar bosons in a moving optical lattice”,
*I. Danshita*and D. Yamamoto, ERATO Macroscopic quantum control conference on ultracold atoms and molecules, Tokyo, Japan, January 2011, Poster. - “Transport and macroscopic quantum tunneling of one-dimensional Bose gases in an optical lattice”,
*I. Danshita*, C. W. Clark, and A. Polkovnikov, New Development of Numerical Simulations in Low-Dimensional Quantum Systems: From Density Matrix Renormalization Group to Tensor Network Formulations, Kyoto, Japan, October 2010, Poster. - “Macroscopic quantum tunneling dynamics in one-dimensional Bose gases”,
*I. Danshita*and A. Polkovnikov, International Workshop on Density Matrix Renormalization Group and Other Advances in Numerical Renormalization Group, Beijing, China, August-September 2010, Poster. - “Macroscopic quantum tunneling of supercurrents of ultracold atomic gases in a ring optical lattice”,
*I. Danshita*and A. Polkovnikov, The International Workshop “Ultracold Fermi Gas: Superfluidity and Strong-Correlation”, Tokyo, Japan, May 2010, Invited. - “Numerical verification of the instanton method on macroscopic quantum tunneling: phase slip dynamics”,
*I. Danshita*and A. Polkovnkov, APCTP-KIAS Joint Workshop on Quantum Entanglement and Dynamics in Correlated Many-Body Systems, Pohang, Korea, May 2010, Oral. - “Numerical verification of the instanton method on macroscopic quantum tunneling: phase slip dynamics”,
*I. Danshita*and A. Polkovnkov American Physical Society March Meeting, Portland, Oregon, USA, March 2010, Oral. - “Supercurrent dynamics in one-dimensional Bose gases in a ring optical lattice”,
*I. Danshita*and A. Polkovnikov, CIFAR UltraCold Matter Meeting, Halifax, Nova Scotia, Canada, August 12th 2009, Poster. - “Supercurrent decay in one-dimensional Bose gases in a ring optical lattice”,
*I. Danshita*and A. Polkovnikov, 40th Annual Meeting of the Division of Atomic, Molecular, and Optical Physics, Charlottesville, Virginia, USA, May 2009, Oral. - “Damped dipole oscillations of one-dimensional Bose gases in an optical lattice”,
*I. Danshita*and C. W. Clark, Conference on Research Frontier in Ultra-Cold atoms, Trieste, Italy, May 2009, Poster. - “Superfluid and supersolid phases of dipolar bosons in an optical lattice”,
*I. Danshita*and C. A. R. Sá de Melo, 39th Annual Meeting of the Division of Atomic, Molecular, and Optical Physics, State College, Pennsylvania, USA, May 28th 2008, Poster. - “Damped motion of one-dimensional Bose gases in an optical lattice”,
*I. Danshita*and C. W. Clark, 39th Annual Meeting of the Division of Atomic, Molecular, and Optical Physics, State College, Pennsylvania, USA, May 2008, Oral. - “Superfluid-to-Mott insulator transition of ultracold bosons in double-well optical lattices”,
*I. Danshita*, J. E. Williams, C. A. R. Sá de Melo, and C. W. Clark, Bose-Einstein Condensation 2007, Sant Feliu de Guixols, Spain, September 2007, Poster. - “Quantum phase transition of ultracold bosons in double-well optical lattices”,
*I. Danshita*, J. E. Williams, C. A. R. Sá de Melo, and C. W. Clark, 16th, International Laser Physics Workshop, Leon, Mexico, August 2007, Oral. - “Phase diagram of the two-leg Bose-Hubbard model”,
*I. Danshita*, J. E. Williams, C. A. R. Sá de Melo, and C. W. Clark, 38th Annual Meeting of the Division of Atomic, Molecular, and Optical Physics, Calgary, Canada, June 2007, Oral. - “Phase diagram for ultracold bosons in double-well optical lattices”,
*I. Danshita*, J. E. Williams, C. A. R. Sá de Melo, and C. W. Clark American Physical Society March Meeting, Denver, Colorado, USA, March 2007, Oral. - “Elementary excitations and superfluidity of Bose-Einstein condensates in inhomogeneous media”,
*Ippei Danshita*, The 4th 21st century COE symposium on Physics of Self-organization System: Self-organization Phenomena in Condensed Matter, Waseda University, Tokyo, Japan, September 2006, Invited. - “Bogoliubov excitations and superfluidity in a Kronig-Penney potential”,
*I. Danshita*, S. Kurihara, and S. Tsuchiya, American Physical Society March Meeting, Baltimore, Maryland, USA, March 2006, Oral. - “Elementary excitations of condensates in Kronig-Penney potentials”,
*I. Danshita*, S. Kurihara, and S. Tsuchiya 24th International Conference on Low Temperature Physics, Orland, USA, August 21st 2005, Poster. - “Crossover from the dipole mode to the Josephson plasma mode of condensate excitations in a double-well traps”,
*I. Danshita*, N. Yokoshi, and S. Kurihara The 14th International Laser Physics Workshop, Kyoto, Japan, July 2005, Poster. - “Quasi-resonant tunneling in bosonic superfluid-insulator-superfluid junctions”,
*I. Danshita*, N. Yokoshi, and S. Kurihara, The 13th International Laser Physics Workshop, Trieste, Italy, July 2004, Oral. - “Phase dependence of tunneling of phonon excitations between two Bose-Einstein condensates”,
*I. Danshita*, N. Yokoshi, and S. Kurihara, International Symposium on Quantum Fluids and Solids, Albuquerque, New Mexico, USA, August 2003, Poster.