Description of Research Area

A02: Space-time | Research Projects

A02-002  Nonequilibrium Dynamics of Multicomponent Bose-Einstein Condensates


HIRANO, Takuya

Department of Physics, Gakushuin University

Researcu Subject

A Bose-Einstein condensate (BEC) of neutral atoms is a meso-scale quantum system in which typically 106 atoms, a very few number compared to the Avogadro number, are confined in a macro-scale volume such as 104 m3, and cooled down to an ultralow temperature of about 100 nK. In this Research Projects, we view the multicomponent BEC as a nonequilibrium system, and will observe dynamics of nonequilibrium structures to deepen the physical understanding of the order formations. In an atomic BEC, we can dynamically and precisely control the temperature, external forces, and even the interaction strength between atoms, and an optical imaging technique enables realtime observation of its dynamics. In addition, we can quantitatively predict many of the phenomena by numerical simulations of the Gross-Pitaevskii equation, and this will allow detailed understanding of the dynamics of nonequilibrium structures.


SAITO, Hiroki

Graduate School of Informatics and Engineering, The University of Electro-Communications

Research Partner

Department of Physics, Gakushuin University
ETO, Yujiro
National Metrology Institute of Japan, AIST
Department of Physics, Gakushuin University
Phase separation in a two-coponent condensate
Grant-in-Aid for Scientific Research (KAKENHI) on Innovative Areas, MEXT, Japan
Synergy of Fluctuation and Structure : Quest for Universal Laws in Non-Equilibrium Systems