Heteronuclear Efimov Scenario in Ultracold Quantum Gases
Universality in Systems with Large Mass Imbalance
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Beschreibung
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.
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-universalproperties 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.
Nominated as an outstanding Ph.D. thesis by the University of Heidelberg, Germany First demonstration of scaling behaviour in Efimov physics in heteronuclear system Provides a tentative understanding of all important properties of the Efimov scenario for systems with large mass differences Includes supplementary material: sn.pub/extras
Autor*in
Juris Ulmanis
Themen in »Heteronuclear Efimov Scenario in Ultracold Quantum Gases«
Effimov Effect Universal and Nonuniversal Physics Feshbach Resonances Solution to the Three-Body Problem Ultracold Atoms and Molecules Discrete Scaling Symmetry Bose-Fermi Mixtures Ultracold Gases with Mass Imbalance Born-Oppenheimer Approximation for Efimov Physics Efimov Trimer with Two Species