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篇目详细内容 |
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【篇名】 |
O (n ) tricriticality in two dimensions |
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【刊名】 |
Frontiers of Physics in China |
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【刊名缩写】 |
Front. Phys. China |
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【ISSN】 |
1673-3487 |
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【EISSN】 |
1673-3606 |
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【DOI】 |
10.1007/s11467-007-0010-y |
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【出版社】 |
Higher Education Press and Springer-Verlag |
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【出版年】 |
2007 |
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【卷期】 |
2
卷1期 |
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【页码】 |
103-108
页,共
6
页 |
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【作者】 |
GUO Wen-an;
Henk W.J. Bl?te;
Bernard Nienhuis;
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【关键词】 |
O(n) model; tricriticality; critical exponents |
【摘要】 |
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We present exact results for several universal parameters of the tricritical O (n) model in two dimensions. The results apply to the range ?2≤n≤3/2, and include the central charge and three scaling dimensions, associated with temperature, magnetic field and the introduction of an interface. Since these results are based on an extrapolation of known relations between the O (n) and the Potts model, they cannot be considered as rigorous. For this reason, we perform an accurate numerical analysis of the central charge and the critical exponents. This analysis, which is based on transfer-matrix calculations on the honeycomb lattice, is in a full and precise agreement with the theoretical predictions. |
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