We extend our previous analysis of the quantum state during and after
O(4)-symmetric bubble nucleation to the case including gravitational effects.
We find that there exists a simple relationship between the case with and
without gravitational effects. In a special case of a conformally coupled
scalar field which is massless except on the bubble wall, the state is found to
be conformally equivalent to the case without gravity.Comment: 31 pages plain Tex file, uuencoded postscript figure file is
available from [email protected] upon request, KUNS126