uu.seUppsala University Publications
Change search
ReferencesLink to record
Permanent link

Direct link
On thermalization in de Sitter space
Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Theoretical Physics.
2004 In: Journal of High Energy Physics, Vol. 03, no 036Article in journal (Refereed) Published
Place, publisher, year, edition, pages
2004. Vol. 03, no 036
URN: urn:nbn:se:uu:diva-93455OAI: oai:DiVA.org:uu-93455DiVA: diva2:166933
Available from: 2005-09-08 Created: 2005-09-08Bibliographically approved
In thesis
1. String Theory at the Horizon: Quantum Aspects of Black Holes and Cosmology
Open this publication in new window or tab >>String Theory at the Horizon: Quantum Aspects of Black Holes and Cosmology
2005 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

String theory is a unified framework for general relativity and quantum mechanics, thus being a theory of quantum gravity. In this thesis we discuss various aspects of quantum gravity for particular systems, having in common the existence of horizons. The main motivation is that one major challenge in theoretical physics today is in trying to understanding how time dependent backgrounds, with its resulting horizons and space-like singularities, should be described in a controlled way. One such system of particular importance is our own universe.

We begin by discussing the information puzzle in de Sitter space and consequences thereof. A typical time-scale is encountered, which we interpreted as setting the thermalization time for the system. Then the question of closed time-like curves is discussed in the combined setting where we have a rotating black hole in a Gödel-like universe. This gives a unified picture of what previously was considered as independent systems. The last three projects concerns $c=1$ matrix models and their applications. First in relation to the RR-charged two dimensional type 0A black hole. We calculate the ground state energy on both sides of the duality and find a perfect agreement. Finally, we relate the 0A model at self-dual radius to the topological string on the conifold. We find that an intriguing factorization of the theory previously observed for the topological string is also present in the 0A matrix model.

Place, publisher, year, edition, pages
Uppsala: Institutionen för teoretisk fysik, 2005. viii, 65 p.
Digital Comprehensive Summaries of Uppsala Dissertations from the Faculty of Science and Technology, ISSN 1651-6214 ; 91
Theoretical physics, theoretical physics, string theory, black holes, cosmology, de Sitter space, c=1 matrix models, 2D string theory, topological string theory, conifolds, 4D BPS black holes, Gödel universe, closed time-like curves, Teoretisk fysik
National Category
Physical Sciences
urn:nbn:se:uu:diva-5926 (URN)91-554-6334-7 (ISBN)
Public defence
2005-09-29, Häggsalen, Ångström Laboratory, Lägerhyddsvägen 1, Polacksbacken, Uppsala, 13:15
Available from: 2005-09-08 Created: 2005-09-08Bibliographically approved

Open Access in DiVA

No full text

By organisation
Department of Theoretical Physics

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Total: 114 hits
ReferencesLink to record
Permanent link

Direct link