Dimer Coverings on Random Polyomino Chains

Dimer Coverings on Random Polyomino Chains
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随机多聚骨牌链上的二聚体覆盖

DOI:
10.1515/zna-2015-0121
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发表时间:
2015-06
期刊:
Z. Naturforsch.
影响因子:
--
通讯作者:
Haiyan Chen
Haiyan Chen
中科院分区:
其他
文献类型:
--
作者:
Chuanqi Xiao;Haiyan Chen

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Abstract A polyomino chain is a planar square lattice that can be constructed by successively attaching squares to the previous one in two possible ways. A random polyomino chain is then generated by incorporating the Bernoulli distribution to the two types of attachment, which describes a zeroth-order Markov process. Let (ℜn, p) be the ensemble of random polyomino chains with n squares, where p∈[0,1] is a constant. Then, in this paper, we determine the explicit expression for the expectation of the number of dimer coverings over (ℜn, p). Our result shows that, with only one exception, i.e., p = 0, the average of the logarithm of this expectation is asymptotically nonzero when n → ∞.
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