Dynamic Order-Reversal Transition in a Parametrically Driven Cold Atomic System

POSTER

Abstract

We experimentally demonstrate the reversal transition of the order in a parametrically driven cold atomic system which shows ideal mean-field symmetry-breaking transition, by the application of the pulsed additional bias-field opposite to the pre-existing order. The strength $h_{0}$ and the duration \textit{$\Delta $t} of pulse are the control parameters of the reversal transition. We obtain the phase boundary of the transition and there is critical slowing down behavior near the phase boundary via diverging relaxation time.

Authors

  • Ji-Hyoun Kim

    • School of Physics, Seoul National University, Seoul 151-747, Korea

  • Yonghee Kim

    • School of Physics, Seoul National University, Seoul 151-747, Korea

  • Geol Moon

    • School of Physics, Seoul National University, Seoul 151-747, Korea
    • School of Physics, Seoul National University

  • Myoung-Sun Heo

    • School of Physics, Seoul National University, Seoul 151-747, Korea

  • Wonho Jhe

    • School of Physics, Seoul National University, Seoul 151-747, Korea
    • Department of Physics and Astronomy, Seoul National University