Topological Quantum Phenomena in Condensed Matter with Broken Symmetries

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Hiromitsu TAKEUCHI

Hiromitsu TAKEUCHI

Researcher, Graduate School of Integrated Arts and Sciences, Hiroshima University
Field of Specialty:
Theoretical low temperature physics
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I have been interested in superfluidity and topological defects in atomic Bose-Einstein condensates. One of my impressive study is the theoretical study on dynamics of Kelvin-Helmholtz instability in superfluids. It is known that Kelvin-Helmholtz instability in classical fluids causes characteristic roll-up patterns in shear flows, which have been studied in diverse fields of study as the most fundamental hydrodynamic instability. In this study, it was theoretically revealed that the macroscopic quantum effects, such as superfluidity and quantized vortex, cause novel instability dynamics in atomic Bose-Einstein condensates. I am also interested in analogies with cosmology and high energy physics in superfluid systems.

In this project, I will investigate interface, quantized vortex, and impurity effect in superfluid 3He. I also persue a universal concept of physics on elementary excitations localized on topological defects in Bose and Fermi superfluids.


B.S. (Physics), Osaka City University
M.S. (Physics), Osaka City University
Ph.D. (Physics), Osaka City University


Research Fellow of the Japan Society for the Promotion of Science
Research Associate, Department of Physics, Osaka City University
Researcher, Graduate School of Integrated Arts and Sciences, Hiroshima University


"Crossover between Kelvin-Helmholtz and counter-superflow instabilities in two-component Bose-Einstein condensates",
Naoya Suzuki, Hiromitsu Takeuchi, Kenichi Kasamatsu, Makoto Tsubota, and Hiroki Saito,
Physical Review A 82, 063604(2010).

"Binary quantum turbulence arising from counter-superflow instability in two-component Bose-Einstein condensates",
Hiromitsu Takeuchi, Shungo Ishino, Makoto Tsubota,
Physical Review Letters 105, 205301(2010).

"Analogues of D-branes in Bose-Einstein condensates",
Kenichi Kasamatsu, Hiromitsu Takeuchi, Muneto Nitta, and Makoto Tsubota,
Journal of High Energy Physics 11, 068(2010).

"Quantum Kelvin-Helmholtz Instability in phase-separated two-component Bose-Einstein condensates",
Hiromitsu Takeuchi, Naoya Suzuki, Kenichi Kasamatsu, Hiroki Saito, and Makoto Tsubota,
Physical Review B 81, 094517(2010).

"Spontaneous radiation and amplification of Kelvin waves on quantized vortices in Bose-Einstein condensates",
Hiromitsu Takeuchi, Kenichi Kasamatsu, and Makoto Tsubota,
Physical Review A 79, 033619(2009).

"Boojums in Rotating Two-Component Bose-Einstein Condensates",
Hiromitsu Takeuchi and Makoto Tsubota,
Journal of the Physical Society of Japan 75, 063601(2006).