Impurity Physics in Resonant X-Ray Scattering and Ultracold Atomic Gases
Author
Metadata
Show full item recordCitation
Benjamin, David Isaiah. 2014. Impurity Physics in Resonant X-Ray Scattering and Ultracold Atomic Gases. Doctoral dissertation, Harvard University.Abstract
This thesis presents work on theoretical tools used to study transient and quantum-fluctuating impurity potentials that arise in resonant x-ray scattering and ultracold atomic gases. These tools fall under two main classes, functional determinants for exact evaluation of many-fermion matrix elements, and the variational polaron transformation. The following work carefully introduces both approaches and compares theoretical predictions to known experimental and computational results. In several cases this thesis presents arguments that experiments on high-temperature superconducting cup rates must be reinterpreted in terms of a quasiparticle picture. Where no experimental data exist, predictions are made and suggestions given for new uses for simple experimental techniques. For example, indirect resonant inelastic x-ray scattering turns out to be a versatile pseudo gap probe, and radio frequency absorption of a fermi gas with an impurity can detect a repulsively-bound state.Terms of Use
This article is made available under the terms and conditions applicable to Other Posted Material, as set forth at http://nrs.harvard.edu/urn-3:HUL.InstRepos:dash.current.terms-of-use#LAACitable link to this page
http://nrs.harvard.edu/urn-3:HUL.InstRepos:13067679
Collections
- FAS Theses and Dissertations [6136]
Contact administrator regarding this item (to report mistakes or request changes)