Ultracold Collisions to Probe Fundamental Physics

目前的建议包括三个相互关联的主题：超冷原子-原子碰撞，超冷原子-离子散射，和建模的超冷样品掺杂带电粒子。铬的散射特性，包括偶极-偶极相互作用在磁场的存在下，将使用内的多通道处理计算。 了解复杂原子的这些散射特性变得更加重要，因为这些物质被冷却到超冷温度。 还将研究Feshbach共振对超冷混合物（如Li-H）的影响。 第二，将超精细相互作用纳入超冷原子-离子散射研究的影响，将被检查。最后，将研究掺杂带电粒子的捕获气体的超冷样品的行为。

The present proposal covers three interconnected topics: ultracold atom-atom collisions, ultracold atom-ion scattering, and modeling of ultracold samples doped with charged particles. The scattering properties of chromium, including dipole-dipole interactions in the presence of a magnetic field, will be computed using a within a multichannel treatment. Understanding these scattering properties of complex atoms becomes more important as such species arecooled to ultracold temperatures. The effect of Feshbach resonances on ultracoldmixtures, such as Li-H will also be investigated. Second, the impact of including hyperfineinteractions in studies of ultracold atom-ion scattering, will be examined. Finally, the behavior of ultracold samples of trapped gases doped with charged particles, will be studied.