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

@article{Bolech2002SolutionOT, 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}, year={2002}, volume={88 23}, pages={ 237206 } }

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…

## 27 Citations

Mapping of the anisotropic two-channel Anderson model onto a Fermi-Majorana biresonant level model.

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The correspondence between an extended version of the two-channel Anderson model and a particular type of biresonant level model is established and it is shown how the model approaches a universal line of fixed points non-Fermi liquid in nature.

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In this talk we will present the solution of the two-channel Anderson impurity model, proposed in the context of the heavy fermion compound UBe13, and discuss briefly the more general multi-channel…

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