
pmid: 10013517
Quantum electrodynamics in 2+1 dimensions (${\mathrm{QED}}_{2+1}$) at finite density and temperature is analyzed by reducing it to an effective (0+1)-dimensional theory. A realization of ${\mathrm{QED}}_{2+1}$ at finite density in the context of (planar) gapless semiconductors is suggested.
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