Nontopological finite temperature induced fermion number.


We show that while the zero temperature induced fermion number in a chiral sigma model background depends only on the asymptotic values of the chiral field, at finite temperature the induced fermion number depends also on the detailed shape of the chiral background. We resum the leading low temperature terms to all orders in the derivative expansion… (More)


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@article{Aitchison2001NontopologicalFT, title={Nontopological finite temperature induced fermion number.}, author={Ian J. R. Aitchison and Gerald V. Dunne}, journal={Physical review letters}, year={2001}, volume={86 9}, pages={1690-3} }