SEMICLASSICAL CORRECTIONS TO KASNER COSMOLOGIES

We consider the Einstein equations for a Bianchi type I geometry, modi fied by first-order semiclassical quantum corrections. Using reduction techniques developed by Parker and Simon, we simplify these equations , obtaining reduced forms containing only first and second derivatives . We then find analytical solutions for both the vacuum case and for t he case of a perfect fluid with a stiff equation of state. In the vacu um case we find that the Kasner solution maintains the same form in bo th the classical and semiclassical regimes. In the matter-filled case we observe, however, that a qualitatively different behavior emerges i n the semiclassical era. We comment on the nature of these differences .