Monopoles, confinement, and deconfinement of (2+1)D compact lattice QED inexternal fields - art. no. 114502

The compact Abelian model in three space-time dimensions is studied in the presence of external electromagnetic fields at finite temperatures. We shoc k that the deconfinement phase transition is independent of the strength of the external fields. This result is in agreement with our observation that the external fields create small-size magnetic dipoles from the vacuum whi ch do not influence the confining properties of the model. Contrary to the deconfinement phase, the internal field in the direction of the applied ext ernal field is attenuated in the confinement phase this screening becomes s tronger with decreasing temperature.