Quantum critical entanglement in an Anderson model with a pseudogap
نویسنده
چکیده
Quantum phase transitions are highly relevant to current research efforts in both superconductivity and quantum information. Numerical renormalization group (NRG) studies of quantum impurity models near a quantum critical point have given us a theoretical understanding of many low-temperature systems, successfully explaining the experimental properties of certain superconducting materials and quantum-dot systems. We study entanglement near the quantum critical point in an Anderson model with a pseudogap using the NRG, and successfully relate the entanglement entropy to established properties of the model.
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