Second Wilson number from third-order perturbation theory for the symmetric single-impurity Kondo model at low temperatures
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arXiv
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| Hauptverfasser: | , |
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| Format: | Preprint |
| Veröffentlicht: |
2024
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| _version_ | 1866914727222837248 |
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| author | Bauerbach, Kevin Gebhard, Florian |
| author_facet | Bauerbach, Kevin Gebhard, Florian |
| contents | We determine the impurity-induced free energy and the impurity-induced zero-field susceptibility of the symmetric single-impurity Kondo model from weak-coupling perturbation theory up to third order in the Kondo coupling at low temperatures and small magnetic fields. We reproduce the analytical structure of the zero-field magnetic susceptibility as obtained from Wilson's renormalization group method. This permits us to obtain analytically the first two Wilson numbers. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2401_05979 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Second Wilson number from third-order perturbation theory for the symmetric single-impurity Kondo model at low temperatures Bauerbach, Kevin Gebhard, Florian Strongly Correlated Electrons Statistical Mechanics We determine the impurity-induced free energy and the impurity-induced zero-field susceptibility of the symmetric single-impurity Kondo model from weak-coupling perturbation theory up to third order in the Kondo coupling at low temperatures and small magnetic fields. We reproduce the analytical structure of the zero-field magnetic susceptibility as obtained from Wilson's renormalization group method. This permits us to obtain analytically the first two Wilson numbers. |
| title | Second Wilson number from third-order perturbation theory for the symmetric single-impurity Kondo model at low temperatures |
| topic | Strongly Correlated Electrons Statistical Mechanics |
| url | https://arxiv.org/abs/2401.05979 |