Solution of the two-channel Anderson impurity model: implications for the heavy fermion UBe13.

  title={Solution of the two-channel Anderson impurity model: implications for the heavy fermion UBe13.},
  author={Carlos Bolech and Natan Andrei},
  journal={Physical review letters},
  volume={88 23},
We solve the two-channel Anderson impurity model using the Bethe-ansatz. We determine the ground state and derive the thermodynamics, obtaining the impurity entropy and specific heat over the full range of temperature. We show that the low-temperature physics is given by a line of fixed points describing a two-channel non-Fermi-liquid behavior in the integral valence regime associated with moment formation as well as in the mixed valence regime where no moment forms. We discuss the relevance… 

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