Probing fundamental physics with ultracold systems

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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