论文标题

$ p $ - 波互动的自旋偏振费

Spin-polarized fermions with $p$-wave interactions

论文作者

Top, Furkan Çağrı, Margalit, Yair, Ketterle, Wolfgang

论文摘要

我们研究$ {^6} $ li原子的量子退化气体,高密度($ 10^{15} $ cm $^{ - 3} $),并观察远离任何Feshbach Resonance的弹性和无弹性$ P $ -WAVE碰撞。 $ p $ - 波蒸发达到$ t/t_f = 0.42 $的温度部分受到通过$ p $ - 波碰撞的能量从高速到低速转移的缓慢传递。通过跨维热化,$ p $ - 波背景散射量被确定为$ \ lvert v_p \ rvert =(39^{+1.3} _ { - 1.6} a_0)^3 $。 $ p $ - 波偶极放松产生了最低和最高的超细状态的亚稳态混合物。

We study quantum degenerate Fermi gases of ${^6}$Li atoms at high densities ($10^{15}$ cm$^{-3}$) and observe elastic and inelastic $p$-wave collisions far away from any Feshbach resonance. $P$-wave evaporation reaches temperatures of $T/T_F=0.42$ partially limited by the slow transfer of energy from high to low velocities through $p$-wave collisions. Via cross-dimensional thermalization, the $p$-wave background scattering volume is determined to be $\lvert V_p \rvert =(39^{+1.3}_{-1.6}a_0)^3$. $P$-wave dipolar relaxation creates a metastable mixture of the lowest and highest hyperfine states.

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