Ising-model description of quantum critical points in electron and spin systems (Q2776436)
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scientific article; zbMATH DE number 1714589
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | Ising-model description of quantum critical points in electron and spin systems |
scientific article; zbMATH DE number 1714589 |
Statements
21 November 2002
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Sine-Gordon model
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Ashkin-Teller model
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scaling dimension
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spin chain
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ultraviolet limit
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infrared limit
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Ising-model description of quantum critical points in electron and spin systems (English)
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The lecture is devoted to the detailed description of the double-frequency sine-Gordon (DSG) model (see also \textit{G. Delfino} and \textit{G. Mussardo} [Nucl. Phys. B 516, 675-703 (1998; Zbl 0921.35148)] and \textit{Z. Bajnok, L. Palla, G. Takács}, and \textit{F. Wágner} [Nucl. Phys. B 601, 503-538 (2001; Zbl 1076.81541)]) and is mainly based on the paper of \textit{M. Fabrizio, A. O. Gogolin}, and \textit{A. A. Nersesyan} [Nucl. Phys. B 580, 647-687 (2000; Zbl 0984.81099)]. The author develops a nonperturbative scheme based on the equivalence between the DSG model and a properly deformed quantum Ashkin-Teller model.NEWLINENEWLINEFor the entire collection see [Zbl 0976.00041].
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