Excited States of the Fröhlich Polaron Model

PhD defence, Wednesday 23 August 2017. Jonas Dahlbæk.

2017.08.23 | Steffi Hjerrild Iversen

Jonas Dahlbæk

An ionic crystal is made up of positively and negatively charged ions, arranged in a crystal lattice. Placing an electron in an ionic crystal results in a deformation of the crystal lattice, due to negative charge of the electron. The electron together with this deformation of the crystal lattice may be considered as a single 'quasiparticle', called a 'polaron'. The Fröhlich polaron model describes an electron interacting with an ionic crystal.

During his studies, Jonas Dahlbæk studied the existence of excited states in the Fröhlich polaron model. The new results provide insight into the structure of the spectrum of the Fröhlich polaron model in particular, as well as non-relativistic quantum field theories in general.

The PhD degree was completed at the Department of Mathematics, Science and Technology, Aarhus University. The work has been supported by the Villum Foundation.

This résumé was prepared by the PhD student.

Wednesday 23 August 2017 at 14.15
Place: Building 1532, room 116, Lecture Theatre G1, Department of Mathematics, Ny Munkegade 120, Aarhus University, 8000 Aarhus C.
Title of dissertation: Spectral Analysis of Large Particle Systems
Contact information: Jonas Dahlbæk, email: dahlbaek@math.au.dk, tel.: +45 6131 2718
Members of the assessment committee:
Professor Jérémy Faupin, Institut Elie Cartan de Lorraine, Université de Lorraine, France
Professor Horia Cornean, Department of Mathematical Sciences, Aalborg University, Denmark
Professor Bent Ørsted (chair), Department of Mathematics, Aarhus University, Denmark
Main Supervisor:
Professor Jacob Schach Møller, Department of Mathematics, Aarhus University
Associate Professor Oliver Matte, Department of Mathematics, Aarhus University
Language: 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