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Article Contents
1 Introduction
2 Equations of motion
3 Building a perturbative expansion
4 Explicit calculations up to the second-order
5 Divergence of perturbative series
6 Other cosmologies
7 Functional formulation
8 Conclusion
Appendix A: Calculation of the exponential ${\rm e}^{-\sigma {\cal O}}$
Appendix B: Calculation of the kernel ${\tilde K}({\bf r},{\bf r}_1,{\bf r}_2)$

Copyright ESO 2001
Published by EDP Sciences