The classical and quantum dynamic of a nonlinear chareged vibrating string
and its interaction with quantum vacuum field is investigated. Some probability
amplitudes for transitions between vacuum field and quantum states of the
string are obtained. The effect of nonlinearity on some probability amplitudes
is investigated and finally the corect equation for string containing the
vacuum and radiation reaction field is obtained.Comment: 14 pages, no figures. Accepted for publication in IJT

Amooshahi, M.