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Journal Article

The fate of classical tensor inhomogeneities in pre-big-bang string cosmology

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Buonanno,  Alessandra
Theoretical Astrophysics and Relativity Group, California Institute of Technology, Pasadena, California;
Astrophysical and Cosmological Relativity, AEI-Golm, MPI for Gravitational Physics, Max Planck Society;

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gr-qc_0102102.pdf
(Preprint), 4KB

PhysRevD.64_043501.pdf
(Any fulltext), 214KB

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Citation

Buonanno, A., & Damour, T. (2001). The fate of classical tensor inhomogeneities in pre-big-bang string cosmology. Physical Review D, 64: 043501. doi:10.1103/PhysRevD.64.043501.


Cite as: https://hdl.handle.net/11858/00-001M-0000-0019-84B4-9
Abstract
In pre-big-bang string cosmology one uses a phase of dilaton-driven inflation to stretch an initial (microscopic) spatial patch to the (much larger) size of the big-bang fireball. We show that the dilaton-driven inflationary phase does not naturally iron out the initial classical tensor inhomogeneities unless the initial value of the string coupling is smaller than 10^(-35).