In  Fuchsian techniques were used to construct solutions of the Einstein vacuum equations with positive cosmological constant in any dimension which have accelerated expansion at late times and are not assumed to have any symmetry. Detailed asymptotic expansions are obtained for the late-time behaviour of these solutions. In the case of three spacetime dimensions these expansions were first written down by Starobinsky . These spacetimes are closely related to those discussed in Section 5.1. In even spacetime dimensions they have asymptotic expansions in powers of where , but in odd dimensions there are in general terms containing a positive power of multiplied by a power of .
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