Towards a holographic framework for cosmology
Abstract/Contents
- Abstract
- Studies on black hole physics have lead to the holographic principle, which states that a quantum gravitational system can be captured by a theory living in fewer dimensions. Given the observed accelerating expansion of our universe, it has been a major challenge to understand the realization of the holographic principle in cosmology. In this dissertation we review our progress in building such a framework. Starting from concrete AdS/CFT dual pairs, we obtain de Sitter and other general FRW solutions by adding branes and other ingredients from string theory. In the de Sitter case, our brane construction gives a microscopic realization of the dS/dS correspondence. The degrees of freedom in the semi-holographic dual theory provide a parametric interpretation of the Gibbons-Harking entropy of the bulk de Sitter space. In the FRW case, we focus on a family of simple FRW solutions sourced by magnetic flavor branes. These solutions have a holographic dual interpretation which decouples from gravity at late time, opening up the possibility of a precise duality. Time-dependent effects play a crucial role in these dual theories. In particular, we find that time-dependent couplings in a quantum field theory can strongly affect long-distance physics, effectively shifting the infrared operator dimensions and generalizing known unitarity bounds.
Description
| Type of resource | text |
|---|---|
| Form | electronic; electronic resource; remote |
| Extent | 1 online resource. |
| Publication date | 2012 |
| Issuance | monographic |
| Language | English |
Creators/Contributors
| Associated with | Dong, Xi |
|---|---|
| Associated with | Stanford University, Department of Physics |
| Primary advisor | Silverstein, Eva, 1970- |
| Thesis advisor | Silverstein, Eva, 1970- |
| Thesis advisor | Kachru, Shamit, 1970- |
| Thesis advisor | Susskind, Leonard |
| Advisor | Kachru, Shamit, 1970- |
| Advisor | Susskind, Leonard |
Subjects
| Genre | Theses |
|---|
Bibliographic information
| Statement of responsibility | Xi Dong. |
|---|---|
| Note | Submitted to the Department of Physics. |
| Thesis | Thesis (Ph.D.)--Stanford University, 2012. |
| Location | electronic resource |
Access conditions
- Copyright
- © 2012 by Xi Dong
- License
- This work is licensed under a Creative Commons Attribution Non Commercial 3.0 Unported license (CC BY-NC).
Also listed in
Loading usage metrics...