S. P. Gavrilov, D. M. Gitman
A consistent approach (based on QFT) to neutral fermion creation (due to their magnetic moments) in strong inhomogeneous magnetic fields is considered. In particular, it is demonstrated that in specific cases, the problem can be technically reduced to the problem of charge particle creation by an electric step. We demonstrate that the latter problem can be solved consistently in the framework of QFT. All the details of such a construction will be described by us in a next publication. Here, however, using some particular results of the general construction and the above mentioned analogy, we calculate neutral particle creation from the vacuum by a linearly growing magnetic field.
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http://arxiv.org/abs/1211.6776
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