Dirt at absolute zero temperature – Impurity particles in ultracold gases

PhD defence, Thursday 11 May 2017. Rasmus Søgaard Christensen

2017.05.11 | Steffi Hjerrild Iversen

Rasmus Søgaard Christensen

During his studies, Rasmus Søgaard Christensen researched particle behavior at absolute zero temperature: −273°C. At this temperature quantum mechanics runs the show and a range of exotic phenomena are observable.

By emerging an impurity particle into a cloud of potassium atoms the properties of the particle changes. During the PhD study, these properties were derived and compared with recent experiments performed at Aarhus University. The obtained results contributes to the fundamental research and the understanding of basic physical systems. This fundamental understanding of idealised systems yields greater insight into more complicated systems and contributes to e.g. the understanding of superconductivity.

The PhD degree was completed at the Department of Physics and Astronomy, Science and Technology, Aarhus University.

This résumé was prepared by the PhD student.

Thursday 11 May 2017 at 13.15
Place: Building 1525, room 626, Department of Physics and Astronomy, Ny Munkegade 120, 8000 Aarhus C
Title of dissertation:
Polarons: Interacting Impurities In Ultracold Gases
Contact information: Rasmus Søgaard Christensen, e-mail: rasmussc@gmail.com, tel.: +45 30 29 93 89
Members of the assessment committee:
Professor Alessio Recation, Physics Department, University of Trento
Professor Pierbagio Pieri, Department of Physics, University of Camerino
Professor Lars Bojer Madsen (chair), Department of Physics and Astronomy, Aarhus University
Main supervisor:
Associate Professor Georg Bruun, Department of Physics and Astronomy, Aarhus University
The PhD dissertation will be defended in English

The defence is public.
The dissertation is available for reading at the Graduate School of Science and Technology/GSST, Ny Munkegade 120, building 1520, rooms 128-134, 8000 Aarhus C.

PhD defence
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Revised 23.02.2018