Scissors mode oscillations for a finite-temperature strongly-interacting ultracold Fermi gas.

ORAL

Abstract

We investigate the finite-temperature phase diagram for a strongly-interacting Fermi gas. This system consists of two distinct regimes, hydrodynamic and collisionless, which have different collisional properties and depend on interaction strength and temperature. We study the transition from hydrodynamic and collisionless behavior throughout the crossover by examining the scissors mode. This mode proves to be an excellent candidate for finite-temperature measurements as the oscillation is independent of the equation of state and has a low damping term, which provides better resolution of the mode's frequency characteristics.

Authors

  • M.J. Wright

    Inst. of Experimental Physics and Center for Quantum Physics, Univ. Innsbruck; 6020 Innsbruck, Austria

  • S. Riedl

    Inst. of Experimental Physics and Center for Quantum Physics, Univ. Innsbruck; 6020 Innsbruck, Austria

  • A. Altmeyer

    Inst. of Experimental Physics and Center for Quantum Physics, Univ. Innsbruck; 6020 Innsbruck, Austria

  • C. Kohstall

    Inst. of Experimental Physics and Center for Quantum Physics, Univ. Innsbruck; 6020 Innsbruck, Austria

  • E. Sanchez

    Inst. of Experimental Physics and Center for Quantum Physics, Univ. Innsbruck; 6020 Innsbruck, Austria

  • J. Hecker Denschlag

    Inst. of Experimental Physics and Center for Quantum Physics, Univ. Innsbruck; 6020 Innsbruck, Austria

  • R. Grimm

    Inst. of Experimental Physics and Center for Quantum Physics, Univ. Innsbruck; 6020 Innsbruck, Austria