Quantum Phase Transitions in 2d Quantum Liquids
Abstract
These lectures provide a pedagogical introduction to the theory of continuous quantum phase transitions. Various two-dimensional condensed matter systems, such as a superconducting film, a quantum Hall liquid, and an array of Josephson junctions, undergo such a phase transition at the absolute zero of temperature. The universality classes defined by repulsively interacting bosons with and without disorder are shown to play a central role in understanding these systems.
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