Probing fundamental physics with ultracold systems

目前的建议继续以前的工作在三个相互关联的主题：超冷原子碰撞，超冷原子离子散射，和建模的超冷samplesdoped带电粒子。第一个主题涉及计算铬的scatteringproperties，包括偶极-偶极相互作用在磁场的存在下，在一个多通道的治疗。此外，PI将研究Feshbach共振对超冷混合物（如Li-H或Li-Na）的影响，并研究复杂原子（如Rb-Cr或Mn-Cr）的玻色子-玻色子和玻色子-费米子混合物，其中偶极相互作用将影响超冷样品的行为。计算II族原子（如Sr）的散射性质。我们将探讨在研究超冷原子-离子散射时包含超精细相互作用的影响。这与Na-Ca+、Rb-Be+或Rb-Ca+等体系的实验研究有关。最后，PI计划研究掺杂带电粒子的超冷样品的行为。在所有问题中，PI计划实施和测试适用于超低能量范围内多通道治疗的新数值方法。EQUIPMENT SCIENCE FOUNDATION Diary Note提案：0653449 PI姓名：Cote，Robin打印自eJacket：02/13/07第1页，共1页

The present proposal continues previous work on three interconnected topics: ultracoldatom-atom collisions, ultracold atom-ion scattering, and modeling of ultracold samplesdoped with charged particles. The first topic involves calculating the scatteringproperties of chromium, including dipole-dipole interactions in the presence of amagnetic field, within a multichannel treatment. Also, the PI will study the effect ofFeshbach resonances on ultracold mixtures, such as Li-H or Li-Na, and investigateboson-boson and boson-fermion mixtures of complex atoms, such as Rb-Cr or Mn-Cr,for which dipolar interactions will affect the behavior of the ultracold samples.Calculations of the scattering properties of group II atoms, such as Sr will be performed.Second, we will explore the impact of including hyperfine interactions in studies ofultracold atom-ion scattering. This is relevant to nascent experimental efforts onsystems such as Na-Ca+, Rb-Be+, or Rb-Ca+. Finally, the PI plans to investigate thebehavior of ultracold samples doped with charged particles. In all problems the PI plansto implement and test new numerical methods suitable for multichannel treatment in theultralow energy regime.NATIONAL SCIENCE FOUNDATIONDiary NoteProposal:0653449 PI Name:Cote, RobinPrinted from eJacket: 02/13/07 Page 1 of 1