Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2008-12-08
Physics
High Energy Physics
High Energy Physics - Theory
176 pages, 8 figures; PhD thesis, Institute of Cosmology and Gravitation, University of Portsmouth
Scientific paper
Models with extra dimensions have attracted much interest recently because they may provide the solution for long standing problems in physics. One interesting and very attractive idea is that our visible universe is confined to a four-dimensional hypersurface in a higher-dimensional spacetime. This membrane like universe was dubbed brane-world. The main goal of this thesis is the study of the four-dimensional (4D) effective theories and their observational consequences in the brane-world universe. After introducing the brane-world idea with some detail we shall use the gradient expansion method to obtain the 4D effective theories of gravity for several higher-dimensional theories with different numbers of extra-dimensions. In the second half of the thesis, after introducing the concept of brane-inflation we will focus on some observational consequences of these low energy effective theories. In particular, the last two chapters before the conclusion are devoted to the study of non-Gaussianities in general models of inflation.
No associations
LandOfFree
On the four-dimensional effective theories in brane-worlds does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with On the four-dimensional effective theories in brane-worlds, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and On the four-dimensional effective theories in brane-worlds will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-318709