Critical behavior of the two-dimensional spin-diluted Ising model via the equilibrium ensemble approach
The equilibrium ensemble approach to disordered systems is used to investigate the critical behavior of the two-dimensional Ising model in the presence of quenched random site dilution. The numerical transfer matrix technique in semi-infinite strips of finite width, together with phenomenological re...
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| Hauptverfasser: | , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
1 October 1999
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| In: |
Physical review. E, Statistical, nonlinear, and soft matter physics
Year: 1999, Jahrgang: 60, Heft: 4, Pages: 3823-3836 |
| ISSN: | 1550-2376 |
| DOI: | 10.1103/PhysRevE.60.3823 |
| Online-Zugang: | Verlag, Volltext: http://dx.doi.org/10.1103/PhysRevE.60.3823 Verlag, Volltext: https://link.aps.org/doi/10.1103/PhysRevE.60.3823 
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| Verfasserangaben: | Giorgio Mazzeo and Reimer Kühn, Institut für Theoretische Physik, Universitat Heidelberg, Philosophenweg 19, 69120 Heidelberg, Germany |
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| 245 | 1 | 0 | |a Critical behavior of the two-dimensional spin-diluted Ising model via the equilibrium ensemble approach |c Giorgio Mazzeo and Reimer Kühn, Institut für Theoretische Physik, Universitat Heidelberg, Philosophenweg 19, 69120 Heidelberg, Germany |
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| 520 | |a The equilibrium ensemble approach to disordered systems is used to investigate the critical behavior of the two-dimensional Ising model in the presence of quenched random site dilution. The numerical transfer matrix technique in semi-infinite strips of finite width, together with phenomenological renormalization and conformal invariance, is particularly suited to putting the equilibrium ensemble approach to work. A method by which to extract with great precision the critical temperature of the model is proposed and applied. A more systematic finite-size scaling analysis than in previous numerical studies has been performed. A parallel investigation, along the lines of the two main scenarios currently under discussion, namely, the logarithmic corrections scenario (with critical exponents fixed in the Ising universality class) versus the weak universality scenario (critical exponents varying with the degree of disorder), is carried out. In interpreting our data, maximum care is constantly taken to be open to both possibilities. A critical discussion shows that an unambiguous discrimination between the two scenarios is still not possible on the basis of the available finite-size data. | ||
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| 773 | 0 | 8 | |i Enthalten in |t Physical review. E, Statistical, nonlinear, and soft matter physics |d College Park, Md. : APS, 1993 |g 60(1999), 4, Seite 3823-3836 |h Online-Ressource |w (DE-627)268757593 |w (DE-600)1472725-0 |w (DE-576)077609514 |x 1550-2376 |7 nnas |a Critical behavior of the two-dimensional spin-diluted Ising model via the equilibrium ensemble approach |
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