Bosonization and Duality Aspects in Superfluids and Superconductors

The bosonization and duality rules in three-dimensions are applied to analyze some features of superfluids and superconductors. The energy of an ensemble of vortices in a superfluid is recovered by means of a kind of bound which, to some extent, shares similarity with the Bogomol'nyi bound. In the case of superconductors, after recasting the partition function in the form of a pure effective gauge theory, the existence of finite energy vortex solutions is discussed