Chiral symmetry restoration in (2+1)-dimensional QED with a Maxwell-Chern-Simons term at finite temperature
Raoul Dillenschneider, Jean Richert
Abstract
We study the role played by a Chern-Simons contribution to the action in the QED3 formulation of a two-dimensional Heisenberg model of quantum spin systems with a strictly fixed site occupation at finite temperature. We show how this contribution affects the screening of the potential which acts between spinons and contributes to the restoration of chiral symmetry in the spinon sector. The constant which characterizes the Chern-Simons term can be related to the critical temperature Tc above which the dynamical mass goes to zero.
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