In [304] 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 [326
]. 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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