Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
1992-02-19
Physics
High Energy Physics
High Energy Physics - Theory
23 pages
Scientific paper
I discuss how instanton effects can be wiped-out due to the existence of anomalies. I first consider Compact Quantum Electrodynamics in 3 dimensions where confinement of electric charge is destroyed when fermions are added so that a Chern-Simons term is generated as a one-loop effect. I also show that a similar phenomenon occurs in the two-dimensional abelian chiral Higgs model. In both cases anomalies (parity anomaly, gauge anomaly) are responsible of the deconfinement mechanism.
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