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An effective one-loop action built from the soliton field itself for thetwo-dimensional (2D) problem of soliton pair creation is proposed. The actionconsists of the usual mass term and a kinetic term in which the simplederivative of the soliton field is replaced by a covariant derivative. In thiseffective action the soliton charge is treated no longer as a topologicalcharge but as a Noether charge. Using this effective one-loop action, thesoliton-antisoliton pair production rate is calculated and one recovers Stone'sexponential factor and the prefactor of Kiselev, Selivanov and Voloshin. Theresults are also valid straightforwardly to the problem of pair creation rateof domain walls in dimensions greater than 2.Comment: 12 pages, Late

False vacuum decay: Effective one-loop action for pair creation of domain walls