On `rolling moduli' solutions in string cosmology
Preprint
- 1 May 1994
Abstract
Given a static string solution with some free constant parameters (`moduli') it may be possible to construct a time-dependent solution by just replacing the moduli by some functions of time. We present several examples when such `rolling moduli' ansatz is consistent. In particular, the anisotropic D=4 cosmological solution of Nappi and Witten can be reinterpreted as a time-dependent generalisation of the (analytic continuation of) D=3 `charged black string' background with the `charge' changing with time. We find some new D=4 cosmological solutions which are `two rolling moduli' generalisations of the previously known ones. We also comment on interplay between duality transformations and the replacement of moduli by functions of time.Keywords
All Related Versions
- Version 1, 1994-05-01, ArXiv
- Published version: Physics Letters B, 334 (3-4), 315.
This publication has 0 references indexed in Scilit: