ar X iv : h ep - t h / 02 02 04 4 v 1 7 F eb 2 00 2 NTUA – 02 – 2002 hep - th / 0202044 Brane Cosmology

ar X iv : h ep - t h / 02 02 04 4 v 2 2 2 Fe b 20 02 NTUA – 02 – 2002 hep - th / 0202044 Brane Cosmology

The aim of these lectures is to give a brief introduction to brane cosmology. After introducing some basic geometrical notions, we discuss the cosmology of a brane universe with matter localized on the brane. Then we introduce an intrinsic curvature scalar term in the bulk action, and analyze the cosmology of this induced gravity. Finally we present the cosmology of a moving brane in the backgr...

ar X iv : h ep - t h / 02 11 04 8 v 1 7 N ov 2 00 2 Inflation , Quantum Cosmology and the Anthropic Principle 1

ar X iv : h ep - t h / 02 04 06 6 v 3 1 6 M ay 2 00 2 hep - th / 0204066 FIT HE - 02 - 01 Localization of Gravity on Brane

We address the localization of gravity on the Friedmann-Robertson-Walker type brane embedded in either AdS5 or dS5 bulk space, and derive two definite limits between which the value of the bulk cosmological constant has to lie in order to localize the graviton on the brane. The lower limit implies that the brane should be either dS4 or 4d Minkowski in the AdS5 bulk. The positive upper limit ind...

ar X iv : h ep - t h / 02 02 01 6 v 1 3 F eb 2 00 2 Gravitational Waves in Brane World — A Midi - superspace Approach —

It is important to reveal the brane-bulk correspondence for understanding the brane world cosmology. When gravitational waves exist in the bulk, however, it is difficult to make the analysis of the interrelationship between the brane and the bulk. Hence, the minimal model which allows gravitational waves in the bulk would be useful. As for such models, we adopt the Bianchi type midi-superspace ...

ar X iv : h ep - t h / 02 06 05 7 v 4 7 A ug 2 00 2 hep - th / 0206057 Intersecting S - Brane Solutions of D = 11 Supergravity

We construct all possible orthogonally intersecting S-brane solutions in 11-dimensions corresponding to standard supersymmetric M-brane intersections. It is found that the solutions can be obtained by multiplying the brane and the transverse directions with appropriate powers of two hyperbolic functions of time. This is the S-brane analog of the " harmonic function rule ". The transverse direct...