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Space-time singularities and the Kähler cone

✍ Scribed by L. Järv; C. Mayer; T. Mohaupt; F. Saueressig

Publisher
John Wiley and Sons
Year
2004
Tongue
English
Weight
98 KB
Volume
52
Category
Article
ISSN
0015-8208

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✦ Synopsis

Abstract

We review recent results on the interplay between the five‐dimensional space‐time and the internal manifold in Calabi‐Yau compactifications of M‐theory. Black string, black hole and domain wall solutions as well as Kasner type cosmologies cannot develop a naked singularity as long as the moduli take values inside the Kähler cone.

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Reducing the heterotic supergravity on n
Reducing the heterotic supergravity on nearly-Kähler coset spaces
✍ A. Chatzistavrakidis; P. Manousselis; G. Zoupanos 📂 Article 📅 2009 🏛 John Wiley and Sons 🌐 English ⚖ 163 KB

## Abstract We study the dimensional reduction of the 𝒩 = 1, ten‐dimensional Heterotic Supergravity to four dimensions, at leading order in α', when the internal space is a nearly‐Kähler manifold. Nearly‐Kähler manifolds in six dimensions are all the non‐symmetric coset spaces and a group manifold.