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Efimov Physics in Fermionic Lithium atoms

Kang, Daekyoung
http://rave.ohiolink.edu/etdc/view?acc_num=osu1313079946

Abstract Details

2011, Doctor of Philosophy, Ohio State University, Physics.
Efimov physics refers to universal phenomena that are characterized by discrete scaling behavior in three-body systems consisting of particles that interact with a large scattering length. The most well-known example is Efimov trimers, a sequence of universal bound states that in the case of infinite scattering length have a geometric spectrum with an accumulation point at the three-particle threshold. Efimov physics is also manifested in scattering processes through log-periodic dependence on the collision energy or on the scattering length. In experiments with trapped ultracold gases, the most dramatic features associated with Efimov physics are resonant enhancements of loss rates from an Efimov trimer near a scattering threshold. This thesis presents studies of Efimov physics in the three lowest hyperfine states of fermionic Lithium-6 atoms. We calculate the spectrum of the Efimov trimers as a function of the magnetic field. We calculate the three-body recombination rate at threshold, which exhibits loss resonances and interference minima associated with Efimov physics. We also calculate the relaxation rate of diatomic molecules due to inelastic collision with an atom, which also exhibit loss resonances and local minima. We compare our results with experimental measurements using trapped ultracold gases of Lithium-6 atoms.
Eric Braaten, PhD (Advisor)
Richard Furnstahl, PhD (Committee Member)
Mohit Randeria, PhD (Committee Member)
Gregory Lafyatis, PhD (Committee Member)
121 p.
Physics
Efimov physics; Ultracold atoms; few-body physics; universality; strongly interacting system

Recommended Citations

Citations

  • Kang, D. (2011). Efimov Physics in Fermionic Lithium atoms [Doctoral dissertation, Ohio State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=osu1313079946

    APA Style (7th edition)

  • Kang, Daekyoung. Efimov Physics in Fermionic Lithium atoms. 2011. Ohio State University, Doctoral dissertation. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=osu1313079946.

    MLA Style (8th edition)

  • Kang, Daekyoung. "Efimov Physics in Fermionic Lithium atoms." Doctoral dissertation, Ohio State University, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=osu1313079946

    Chicago Manual of Style (17th edition)

osu1313079946
738
© 2011, all rights reserved.
This open access ETD is published by The Ohio State University and OhioLINK.