Ghost fields, pair connectedness, and scaling: exact results in one-dimensional percolation
P J Reynolds; H E Stanley; W Klein; P J Reynolds; Dept. of Phys., Boston Univ., Boston, MA, USA; H E Stanley; Dept. of Phys., Boston Univ., Boston, MA, USA; W Klein; Dept. of Phys., Boston Univ., Boston, MA, USA
Журнал:
Journal of Physics A: Mathematical and General
Дата:
1977-11-01
Аннотация:
The percolation problem is solved exactly in one dimension. The functions obtained bear a strong resemblance to those of the n-vector model on the same lattice. Further, a ghost field is included exactly in all dimensions d, thereby treating the 'thermodynamics' of percolation without appealing to the Potts model. In particular, it is shown that for d=1 that the nature of the singularities near the critical percolation probability, p<sub>c</sub>=1, is described by alpha <sub>p</sub>= gamma <sub>p</sub>=1, beta <sub>p</sub>=0, and delta <sub>p</sub>= infinity . The pair connectedness and correlation length are calculated explicitly, and eta <sub>p</sub>= nu <sub>p</sub>=1, in agreement with the hyperscaling relation d nu <sub>p</sub>=2- alpha <sub>p</sub>. Finally, scaling is demonstrated for both the cluster size distribution and the percolation function analogous to the Gibbs free energy, and the scaling powers are explicitly evaluated; in particular, the exponents sigma =1 and tau =2, are found.
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