Two-state spin systems with negative interactions
We study the approximability of computing the partition functions of two-state spin systems. The problem is parameterized by a 2 × 2 symmetric matrix. Previous results on this problem were restricted either to the case where the matrix has non-negative entries, or to the case where the diagonal entr...
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| 格式: | Conference item |
| 语言: | English |
| 出版: |
Schloss Dagstuhl
2024
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