507 research outputs found

    Quantum impurity in a magnetic environment

    Full text link
    A unified perspective is given on a number of different problems involving the coupling of a localized quantum spin degree of freedom to the low energy excitations of an antiferromagnet, a spin glass, or a Kondo insulator. The problems are related to those in the class often referred to as "Bose Kondo".Comment: 10 pages, 2 figures, conference on Field Theory and Statistical Mechanics, Rome, June 2002 in honor of G. Jona-Lasini