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Center for Nonlinear Studies |
Quantum critical points (or phases) are special locations in the parameter space of a quantum system where the ground state wavefunction has long-range and scale-invariant quantum entanglement between the local degrees of freedom. Even though such points are present only at absolute zero, they are the key to our understanding of a wide variety of experiments at non-zero temperatures on modern quantum materials. I will give an overview of the basic theory, and survey recent experiments.
Host: Robert Ecke, CNLS, 667-1444, ecke@lanl.gov