Tufts/CfA/MIT Cosmology Seminar, at Tufts:

                      Tuesday October 22, 1996
                             2:30 pm
                         Robinson Hall, Rm. 153

                 "Probability Distribution for Omega 
                      in Open-Universe Inflation"

                           Serge Winitzki
                          Tufts University

Abstract: 
Recently, several models of open-universe inflation with bubble
nucleation were introduced in which the cosmological density $\Omega$
may take a continuous range of values, such as the ``hybrid''
inflation of Linde et al.  We consider the problem of predicting the
present-day value of $\Omega$ arising from these models (that is, the
value detected by a typical observer).  Depending on the parameters of
the ``hybrid inflation'' model, the probability distribution is peaked
either at $\Omega$ very close to 1 or at an intermediate value of
$\Omega$ in the range 0.03 to 1.