Abstract
The quantum flux creep model of Ivlev et al. has been extended to include the dissipative and inertial mass contributions to the bounce action. The crossover temperature, the activation energy, and the quantum tunneling rate are evaluated numerically. This has been carried out by a perturbation expansion retaining only the leading-order term deemed to be valid in the vicinity of and below the crossover temperature. It is found that the crossover temperature and the activation energy are relatively unchanged but the quantum tunneling rate is drastically reduced when compared with the estimates of Ivlev et al. Furthermore, the quantum tunneling rate is temperature dependent in the neighborhood of the crossover temperature.
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