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Self-contained presentation suitable as textbook or as self-study guide
Superfluidity – and closely related to it, superconductivity – are very general phenomena that can occur on vastly different energy scales. Their underlying theoretical mechanism of spontaneous symmetry breaking is even more general and applies to a multitude of physical systems.
In these lecture notes, a pedagogical introduction to the field-theory approach to superfluidity is presented. The connection to more traditional approaches, often formulated in a different language, is carefully explained in order to provide a consistent picture that is useful for students and researchers in all fields of physics.
After introducing the basic concepts, such as the two-fluid model and the Goldstone mode, selected topics of current research are addressed, such as the BCS-BEC crossover and Cooper pairing with mismatched Fermi momenta.
Content Level »Graduate
Keywords »BCS-BEC Crossover - Spontaneous Symmetry Breaking and Goldstone Theorem - Superfluid Thermodynamics - Superfluidity Textbook - Superfluidity and Superconductivity - Two-fluid Model of Superfluidity