Abstract

The quantum mechanical few-body problem has a long history, covering diverse fields such as nuclear, high-energy and atomic physics. In recent years, progress in understanding the few-body problem has been driven by rapid developments in the field of cold atomic gases. 

In this talk, Jesper Levinsen will review the role played by quantum statistics and dimensionality on few-body physics. He will then present several new results, for instance how in a two-dimensional heteronuclear Fermi gas three atoms have a hydrogenic spectrum while tetramers consisting of three identical fermions and an additional light atom can form. Furthermore, the possibility of fermionic trimers at large mass ratio can lead to strong p-wave scattering at slightly smaller mass ratio, which has recently been confirmed by experiment.

CV

Jesper Levinsen is a Dale T. Mortensen Junior Fellow at AIAS. He received his bachelor's and master's degrees in physics from the University of Copenhagen, before moving to the University of Colorado at Boulder for his PhD. Following post doctoral fellowships at the Université Paris-Sud XI and the University of Cambridge, he recently arrived at Aarhus University. His research focuses on ultracold atomic gases, with particular emphasis on the properties of strongly correlated systems. During his DTM Fellowship, he will be working with the project “Engineering novel quantum phases with cold atoms”.

What is a Fellows' Seminar?

The AIAS Fellows' Seminar is a session of seminars held by the AIAS fellows or by other speakers proposed by the fellows. In each seminar, one fellow will present and discuss his/her current research and research project, closing off with a question and discussion session.

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