By Andreas Schmitt
Superfluidity – and heavily regarding it, superconductivity – are very normal phenomena which can ensue on tremendously diversified strength scales. Their underlying theoretical mechanism of spontaneous symmetry breaking is much more basic and applies to a mess of actual systems.
In those lecture notes, a pedagogical creation to the field-theory method of superfluidity is gifted. the relationship to extra conventional methods, frequently formulated in a distinct language, is thoroughly defined that allows you to supply a constant photo that's important for college kids and researchers in all fields of physics.
After introducing the elemental innovations, similar to the two-fluid version and the Goldstone mode, chosen subject matters of present examine are addressed, corresponding to the BCS-BEC crossover and Cooper pairing with mismatched Fermi momenta.
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