Two Channel Multi impurity Kondo model
Fuente:
arXiv
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| Autori principali: | , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| _version_ | 1866908506891747328 |
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| author | Tsvelik, A. M. Kotliar, G. |
| author_facet | Tsvelik, A. M. Kotliar, G. |
| contents | We show that the Ruderman-Kittel-Kasua-Yoisida interaction between overscreened spins in two channel Kondo impurity systems is a relevant perturbation when the number of impurities N is greater than 3 driving the system to a new quantum critical point with anomalous dimensions $\frac{1}{ (N+1)} $ for the spin operator and the Sommerfeld coefficient of the specific heat scales as $γ\sim T^{- \frac{3}{N+1}}$. The critical point universal properties are relevant to many strong correlation problems, such as impurity placed in a Majorana metal and the multichannel Kondo lattice model of heavy fermion materials. We discuss relevance of our results for cluster DMFT studies of quantum criticality. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2502_07506 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Two Channel Multi impurity Kondo model Tsvelik, A. M. Kotliar, G. Strongly Correlated Electrons We show that the Ruderman-Kittel-Kasua-Yoisida interaction between overscreened spins in two channel Kondo impurity systems is a relevant perturbation when the number of impurities N is greater than 3 driving the system to a new quantum critical point with anomalous dimensions $\frac{1}{ (N+1)} $ for the spin operator and the Sommerfeld coefficient of the specific heat scales as $γ\sim T^{- \frac{3}{N+1}}$. The critical point universal properties are relevant to many strong correlation problems, such as impurity placed in a Majorana metal and the multichannel Kondo lattice model of heavy fermion materials. We discuss relevance of our results for cluster DMFT studies of quantum criticality. |
| title | Two Channel Multi impurity Kondo model |
| topic | Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2502.07506 |