Heteronuclear Efimov Scenario in Ultracold Quantum Gases Universality in Systems with Large Mass Imbalance /

• Main Author: Ulmanis, Juris (Author)
• Corporate Author: SpringerLink (Online service)
• Format: Electronic eBook
• Language: English
• Published: Cham : Springer International Publishing : Imprint: Springer, 2017.
• Series: Springer Theses, Recognizing Outstanding Ph.D. Research,
• Subjects: Physics.; Quantum physics.; Phase transformations (Statistical physics).; Condensed materials.; Condensed matter.; Low temperature physics.; Low temperatures.; Quantum Gases and Condensates.; Quantum Physics.; Low Temperature Physics.

 This thesis represents a decisive breakthrough in our understanding of the physics of universal quantum-mechanical three-body systems. The Efimov scenario is a prime example of how fundamental few-body physics features universally across seemingly disparate fields of modern quantum physics. Initially postulated for nuclear physics more than 40 years ago, the Efimov effect has now become a new research paradigm not only in ultracold atomic gases but also in molecular, biological and condensed matter systems. Despite a lot of effort since its first observations, the scaling behavior, which is a hallmark property and often referred to as the “holy grail” of Efimov physics, remained hidden until recently. In this work, the author demonstrates this behavior for the first time for a heteronuclear mixture of ultracold Li and Cs atoms, and pioneers the experimental understanding of microscopic, non-universal properties in such systems. Based on the application of Born-Oppenheimer approximation, well known from molecular physics textbooks, an exceptionally clear and intuitive picture of heteronuclear Efimov physics is revealed. 

 Introduction -- Two-body Interactions Between Li and Cs Atoms -- Universality of LiCs2 Efimov Resonances -- Short-range Effects in LiCs2 Efimov Resonances.-Conclusion and outlook.