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We use an analytic solver for the single-impurity Anderson model based on simplified parquet equations to describe the Kondo asymptotics. This scheme uses a two-particle self-consistency to control the strong-coupling Kondo critical behavior of this model at half filling. The equations can be written in the real-frequency representation, which gives us direct access to spectral functions unlike numerical schemes in the Matsubara formalism. We compare our results to those obtained by second-order perturbation theory, numerical renormalization group, and continuous-time quantum Monte Carlo in order to assess the reliability of this approximation.
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1042-1044
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published
2017-04
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- Institute of Physics, Czech Academy of Sciences, Na Slovance 2, 182 21 Prague, Czech Republic
author
- Department of Condensed Matter Physics, Faculty of Mathematics and Physics, Charles University in Prague, Ke Karlovu 5, 12116 Prague, Czech Republic
author
- Institute of Physics, Czech Academy of Sciences, Na Slovance 2, 182 21 Prague, Czech Republic
author
- Institute of Physics, Czech Academy of Sciences, Na Slovance 2, 182 21 Prague, Czech Republic
References
- [1] V. Janiš, A. Kauch, V. Pokorný, Phys. Rev. B 95, 045108 (2017), doi: 10.1103/PhysRevB.95.045108
- [2] V. Janiš, P. Augustinský, Phys. Rev. B 75, 165108 (2007), doi: 10.1103/PhysRevB.75.165108
- [3] V. Janiš, P. Augustinský, Phys. Rev. B 77, 085106 (2008), doi: 10.1103/PhysRevB.77.085106
- [4] A.C. Hewson, The Kondo Problem to Heavy Fermions, Cambridge University Press, Cambridge 1993, doi: 10.1017/CBO9780511470752
- [5] R. Žitko, NRG LJUBLJANA, open source numerical renormalization group code http://nrgljubljana.ijs.si
- [6] R. Bulla, A.C. Hewson, T. Pruschke, J. Phys. Condens. Matter 10, 8365 (1998), doi: 10.1088/0953-8984/10/37/021
- [7] P. Seth, I. Krivenko, M. Ferrero, O. Parcollet, Comp. Phys. Commun. 200, 274 (2016), doi: 10.1016/j.cpc.2015.10.023
- [8] M. Jarrell, J. Gubernatis, Phys. Rep. 269, 133 (1996), doi: 10.1016/0370-1573(95)00074-7
- [9] J. Gukelberger, L. Huang, P. Werner, Phys. Rev. B 91, 235114 (2015), doi: 10.1103/PhysRevB.91.235114
Document Type
Publication order reference
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YADDA identifier
bwmeta1.element.bwnjournal-article-appv131n4141kz