  It has been argued that the rapid decay of coherent color gauge fields
generated immediately after high energy heavy ion collisions produces quark
gluon plasma. But there are no convincing mechanisms for the rapid decay of the
gauge fields which satisfy phenomenological constraints on their life time. We
show by using classical statistical field theory that the production of
magnetic monopoles cause the rapid decay of the gauge fields. The monopoles are
unstable modes just like Nielsen-Olesen modes and are enormously produced by
dual Schwinger mechanism.
