Abstract
The -nonconserving portion of the gauge-field effective action for an even number of left-handed SU(2) fermion doublets, with nonzero chemical potentials , is calculated to leading order in the inverse temperature, . It is shown to be , where is the Chern-Simons topological mass term. This result is also shown to be a consequence of the anomaly at zero temperature, but with . Because of the in front of the Chern-Simons term, this produces magnetic screening only if is complex.
- Received 12 November 1984
DOI:https://doi.org/10.1103/PhysRevLett.54.970
©1985 American Physical Society