On the classical stability of orientifold cosmologies

• Type: Article in International Scientific Journal
• Date: 2003

Authors

Cornalba, L (Author) Other; Costa, MS (Author) FCUP

Journal

Title: Classical and Quantum Gravity

Vol. 20

Pages: 3969-3995

ISSN: 0264-9381

Publisher: Institute of Physics Publishing

Indexing

ISI Web of Knowledge - 29 Citations

Scopus - 30 Citations

Scientific classification

FOS: Natural sciences > Physical sciences

Other information

Authenticus ID: P-000-F4N

DOI: 10.1088/0264-9381/20/18/309

Abstract (EN): We analyse the classical stability of string cosmologies driven by the dynamics of orientifold planes. These models are related to time-dependent orbifolds, and resolve the orbifold singularities which are otherwise problematic by introducing orientifold planes. In particular, we show that the instability discussed by Horowitz and Polchinski for pure orbifold models is resolved by the presence of the orientifolds. Moreover, we discuss the issue of stability of the cosmological Cauchy horizon, and we show that it is stable to small perturbations due to in-falling matter.

Language: English

Type (Professor's evaluation): Scientific