UWSpace is currently experiencing technical difficulties resulting from its recent migration to a new version of its software. These technical issues are not affecting the submission and browse features of the site. UWaterloo community members may continue submitting items to UWSpace. We apologize for the inconvenience, and are actively working to resolve these technical issues.
 

Decoherence by a non-Markovian and non-Gaussian Environment

Thumbnail Image

Files

Qiao_Wenling.pdf (6.23 MB)

Date

2013-01-25T18:06:13Z

Authors

Qiao, Wenling

Journal Title

Journal ISSN

Volume Title

Publisher

University of Waterloo

Abstract

This thesis studies a spin-star model and an open spin-star model. The spin-star model is exactly solvable, and the approximation methods can be applied and compared with the exact solution. As this model is shown to be non-Gaussian and non-Markovian, Born-Markovian approximation is not valid. The comparison of Nakajima-Zwanzig and time-convolutionless methods show that the performances of those two techniques depend on the specific property of the model. The open spin-star model is not exactly solvable and the analytical solution under Gaussian approximation is obtained.

Description

Keywords

non-Markovian, non-Gaussian, decoherence

LC Keywords

Citation

URI

http://hdl.handle.net/10012/7294

Collections

Theses
Physics and Astronomy