Critical properties of the Fermi-Bose Kondo and pseudogap Kondo models: Renormalized perturbation theory
| dc.creator | Kircan, Marijana | |
| dc.creator | Vojta, Matthias | |
| dc.date | 2003-12-05 | |
| dc.date | 2004-05-21 | |
| dc.date.accessioned | 2026-07-07T02:55:13Z | |
| dc.date.available | 2026-07-07T02:55:13Z | |
| dc.description | Magnetic impurities coupled to both fermionic and bosonic baths or to a fermionic bath with pseudogap density of states, described by the Fermi-Bose Kondo and pseudogap Kondo models, display non-trivial intermediate coupling fixed points associated with critical local-moment fluctuations and local non-Fermi liquid behavior. Based on renormalization group together with a renormalized perturbation expansion around the free-impurity limit, we calculate various impurity properties in the vicinity of those intermediate-coupling fixed points. In particular, we compute the conduction electron T matrix, the impurity susceptibility, and the residual impurity entropy, and relate our findings to certain scenarios of local quantum criticality in strongly correlated lattice models. | |
| dc.description | 16 pages, 5 figs; (v2) large-N results for entropy of Bose-Kondo model added; (v3) final version as published | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0312150 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0312150 | |
| dc.identifier | Phys. Rev. B 69, 174421 (2004) | |
| dc.identifier | doi:10.1103/PhysRevB.69.174421 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/22859 | |
| dc.subject | Strongly Correlated Electrons | |
| dc.subject | Superconductivity | |
| dc.title | Critical properties of the Fermi-Bose Kondo and pseudogap Kondo models: Renormalized perturbation theory | |
| dc.type | text |