Open this publication in new window or tab >>2023 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]
In this compilation thesis, three different quantum mechanical systems are presented. All three have in common that they are one-dimensional quantum systems which, each in their own way, can be seen as analogous to other quantum systems. Chapter 2 is an introduction which takes on the ambitious task to guide the reader from standard quantum mechanical theory to the theory of condensed matter physics. In chapter 3 I present a theory for creating co- herent oscillations in the adiabatic eigenstates of time-periodic quantum systems. These are directly analogous to so-called Bloch oscillations which appear for electrons in periodical potentials which are subjected to a constant force. Chapter 4 concerns how phonon physics, in particular the Peierls instability, can be mimicked in systems of interacting ultacold quantum mechanical gases. In chapter 5, I present quantum mechanical circuits (circuit QED). We propose a circuit where the low-energy physics is analogous to a strongly interacting generalized spin chain, where the so-called superradiance directly correspond to a polarized Ising phase.
Place, publisher, year, edition, pages
Stockholm: Department of Physics, Stockholm University, 2023. p. 132
Keywords
Bloch oscillations, Peierls, adiabatic, diabatic, ultracold atoms, Bose-Fermi mixtures, phonon, cQED, superradiance, polarons, DMRG, MPS, Kosterlitz-Thouless, Wannier, Bloch, quantum phase transitions
National Category
Condensed Matter Physics Atom and Molecular Physics and Optics
Research subject
Theoretical Physics
Identifiers
urn:nbn:se:su:diva-215403 (URN)978-91-8014-234-2 (ISBN)978-91-8014-235-9 (ISBN)
Public defence
2023-04-27, sal FB42, AlbaNova universitetscentrum, Roslagstullsbacken 21 and online via Zoom https://stockholmuniversity.zoom.us/j/62067309502, Stockholm, 13:00 (English)
Opponent
Supervisors
Funder
Knut and Alice Wallenberg Foundation, 31001190Swedish Research Council, 31001189
2023-04-032023-03-132023-03-28Bibliographically approved