Virginia TechZhang, F. C.Lee, T. K.2014-05-072014-05-071983-07Zhang, F. C.; Lee, T. K.,"1/N expansion for the degenerate Anderson model in the mixed-valence regime," Phys. Rev. B 28, 33 DOI: http://dx.doi.org/10.1103/PhysRevB.28.33.0163-1829http://hdl.handle.net/10919/47807The 1N expansion method for the degenerate Anderson model is formulated. N is the degeneracy factor of one of the f-electron configurations. Various ground-state properties are calculated. Excellent agreement with the result of Bethe ansatz for N=6 is shown. The rate of convergence of the series is analyzed. The merit and inadequacy of the method are discussed. At zero temperature the ratio of the magnetic susceptibility and the specific-heat linear coefficient is shown to lie within a range of 1 and 1+(N-1)-1.en-USIn Copyrightphysics, condensed matterArticle - Refereedhttp://journals.aps.org/prb/abstract/10.1103/PhysRevB.28.33https://doi.org/10.1103/PhysRevB.28.33