Faculty Profiles - KAWAGUCHI Yuki

Presentations -

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Non-Abelian Vortices and Their Collision Dynamics in Spinor Bose-Einstein Condensates(Current Topics) International conference

Kobayashi Michikazu, Kawaguchi Yuki, Nitta Muneto, Ueda Masahito

The Physical Society of Japan (JPS)

Event date： 2010.8

Language：Japanese Presentation type：Oral presentation (general)

Country：Japan

Bose-Einstein condensates (BECs) with spin degrees of freedom are predicted to realize non-Abelian vortices. Non-Abelian vortices are now studied in various research arenas such as cosmology, high-energy physics, solid-state physics, and soft matter physics. We report the unique collision dynamics of non-Abelian vortices realized in the cyclic phase of a spin-2 spinor BEC.

20pTB-1 Vortex tiling in spin-2 spinor Bose-Einstein condensates International conference

Kobayashi M., Kawaguchi Y., Ueda M.

The Physical Society of Japan (JPS)

20pTB-4 Generalization of topological charges for excitations in spinor BECs International conference

Kobayashi S., Kobayashi M., Kawaguchi Y., Nitta M., Ueda M.

The Physical Society of Japan (JPS)

20pTB-2 Symmetry classification of the ground states of spin-3 spinor Bose-Einstein condensates International conference

Kawaguchi Yuki, Ueda Masahito

The Physical Society of Japan (JPS)

25aZE-5 Classification of a relation between topolosical exitetions by Homotopy theory International conference

Kobayashi S., Kobayashi M., Kawaguchi Y., Nitta M., Ueda M.

The Physical Society of Japan (JPS)

Spinor Dipolar Bose-Einstein Condensates(Current Topics) International conference

Kawaguchi Yuki, Saito Hiroki, Ueda Masahito

The Physical Society of Japan (JPS)

Event date： 2009.8

Language：Japanese Presentation type：Oral presentation (general)

Country：Japan

Magnetic dipole-dipole interaction in atomic Bose-Einstein condensates (BECs) can induce spin textures, even though it is weaker than other interactions. The key feature of the dipolar interaction is that it is spin-orbit coupling interaction which conserves total angular momentum. Therefore, at extremely low magnetic field, an initially spin-polarized BEC starts rotating spontaneously. Moreover, spin textures develop in the ground state, leading to spontaneous mass current. Such dipolar effect should be observed in a spinor BEC of ^<87>Rb atoms.

28pSK-2 Non-Abelian vortex International conference

Kobayashi M., Kawaguchi Y., Nitta M., Ueda M.

The Physical Society of Japan (JPS)

28pSK-10 Quantum Cluster Expansion Approach at Unitality Limit International conference

Inokuchi Kohji, Kawaguchi Yuki, Ueda Masahito

The Physical Society of Japan (JPS)

28pSK-3 Magnetic Pattern Formation in Spinor Dipolar BECs International conference

Kawaguchi Yuki, Saito Hiroki, Ueda Masahito

The Physical Society of Japan (JPS)

21pQA-2 Topological excitations in spinor Bose-Einstein condensates International conference

Kawaguchi Yuki

The Physical Society of Japan (JPS)

22aZD-12 Quantum Cluster Expansion Approach for BEC-BCS Crossover International conference

Inokuchi Kohji, Kawaguchi Yuki, Ueda Masahito

The Physical Society of Japan (JPS)

24pRF-3 Kibble-Zurek mechanism in a spinor BEC International conference

SAITO Hiroki, KAWAGUCHI Yuki, UEDA Masahito

The Physical Society of Japan (JPS)

24aQD-11 Theory of Spinor Dipolar Bose-Einstein Condensates International conference

Kawaguchi Yuki

The Physical Society of Japan (JPS)

24pRF-2 Knot in a Spinor Bose-Einstein Condensate International conference

Kawaguchi Yuki, Nitta Muneto, Ueda Masahito

The Physical Society of Japan (JPS)

21pRG-8 Spontaneous magnetization process in a spinor BEC International conference

SAITO Hiroki, KAWAGUCHI Yuki, UEDA Masahito

The Physical Society of Japan (JPS)

21pRG-6 Magnetic dipole-dipole interactions in spinor BECs under external magnetic field International conference

Kawaguchi Yuki, Saito Hiroki, Ueda Masahito

The Physical Society of Japan (JPS)

18aXJ-7 Spontaneous Circulation in Ground-State Dipolar BECs International conference

Kawaguchi Yuki, Saito Hiroki, Ueda Masahito

The Physical Society of Japan (JPS)

23pRB-12 Spontaneous vortex creation in a spinor BEC International conference

SAITO Hiroki, KAWAGUCHI Yuki, UEDA Masahito

The Physical Society of Japan (JPS)

23pRB-13 Einstein-de Haas Effect in Dipolar Bose-Einstein Condensates International conference

Kawaguchi Yuki, Saito Hiroki, Ueda Masahito

The Physical Society of Japan (JPS)

12pTF-4 Vortex state in Superfluid Trapped Fermi Gases near a Feshbach Resonance

Kawaguchi Yuki, Ohmi Tetsuo

The Physical Society of Japan (JPS)

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