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The effective action of (2+1)-dimensional QED: the effect of finite fermion density

Dae Kwan Kim, Kwang-Sup Soh

hep-tharXiv:hep-th/9606197

Abstract

The effective action of (2+1)-dimensional QED with finite fermion density is calculated in a uniform electromagnetic field. It is shown that the integer quantum Hall effect and de Haas-van Alphen like phenomena in condensed matter physics are derived directly from the effective action.

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