Spectral scaling and quantum critical behaviour in the pseudogap Anderson model
Europhys. Lett. 61 (2003) 810 The pseudogap Anderson impurity model provides a classic example of an essentially local quantum phase transition. Here we study its single-particle dynamics in the vicinity of the symmetric quantum critical point (QCP) separating generalized Fermi liquid and local mome...
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06-03-2003
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| Abstract | Europhys. Lett. 61 (2003) 810 The pseudogap Anderson impurity model provides a classic example of an
essentially local quantum phase transition. Here we study its single-particle
dynamics in the vicinity of the symmetric quantum critical point (QCP)
separating generalized Fermi liquid and local moment phases, via the local
moment approach. Both phases are shown to be characterized by a low-energy
scale that vanishes at the QCP; and the universal scaling spectra, on all
energy scales, are obtained analytically. The spectrum precisely at the QCP is
also obtained; its form showing clearly the non-Fermi liquid, interacting
nature of the fixed point. |
|---|---|
| AbstractList | Europhys. Lett. 61 (2003) 810 The pseudogap Anderson impurity model provides a classic example of an
essentially local quantum phase transition. Here we study its single-particle
dynamics in the vicinity of the symmetric quantum critical point (QCP)
separating generalized Fermi liquid and local moment phases, via the local
moment approach. Both phases are shown to be characterized by a low-energy
scale that vanishes at the QCP; and the universal scaling spectra, on all
energy scales, are obtained analytically. The spectrum precisely at the QCP is
also obtained; its form showing clearly the non-Fermi liquid, interacting
nature of the fixed point. |
| Author | Glossop, M. T Logan, D. E |
| Author_xml | – sequence: 1 givenname: M. T surname: Glossop fullname: Glossop, M. T – sequence: 2 givenname: D. E surname: Logan fullname: Logan, D. E |
| BackLink | https://doi.org/10.48550/arXiv.cond-mat/0303112$$DView paper in arXiv https://doi.org/10.1209/epl/i2003-00306-3$$DView published paper (Access to full text may be restricted) |
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| Snippet | Europhys. Lett. 61 (2003) 810 The pseudogap Anderson impurity model provides a classic example of an
essentially local quantum phase transition. Here we study... |
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| SubjectTerms | Physics - Strongly Correlated Electrons |
| Title | Spectral scaling and quantum critical behaviour in the pseudogap Anderson model |
| URI | https://arxiv.org/abs/cond-mat/0303112 |
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