Gravitational waves in non-singular string cosmologies

Authors
Cartier, C Copeland, EJ Gasperini, M
Citation
C. Cartier et al., Gravitational waves in non-singular string cosmologies, NUCL PHYS B, 607(1-2), 2001, pp. 406-428
Citations number
59
Categorie Soggetti
Physics
Journal title
NUCLEAR PHYSICS B
ISSN journal
05503213 → ACNP
Volume
607
Issue
1-2
Year of publication
2001
Pages
406 - 428
Database
ISI
SICI code
0550-3213(20010723)607:1-2<406:GWINSC>2.0.ZU;2-F
Abstract
We study the evolution of tensor metric fluctuations in a class of non-sing ular models based on the string effective action, by including in the pertu rbation equation the higher-derivative and loop corrections needed to regul arise the background solutions. We discuss the effects of such higher-order corrections on the final graviton spectrum, and we compare the results of analytical and numerical computations. (C) 2001 Elsevier Science B.V. All r ights reserved.