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arXiv 0907.3101cond-mat.stat-mechcond-mat.softmath-phmath.COmath.MP
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具有场与表面相互作用的离散(1+1)维RSOS模型的精确解

Exact Solution of the Discrete (1+1)-dimensional RSOS Model with Field and Surface Interactions

A L Owczarek, T Prellberg

摘要:

本文给出了一个线性场约束固体--固体(RSOS)模型的解。除了在描述磁体中的相边界的背景下,这个模型的起源,兴趣也来自于最近的工作的稳态非平衡模型的分子马达。虽然在物理行为上类似于先前解决的(非限制性)SOS模型,但在数学上解决方案更复杂。在基本超几何函数${}_3ϕ_2$的基础上,给出了有向格路母函数词典的一种新的求解形式。

英文摘要:

We present the solution of a linear Restricted Solid--on--Solid (RSOS) model in a field. Aside from the origins of this model in the context of describing the phase boundary in a magnet, interest also comes from more recent work on the steady state of non-equilibrium models of molecular motors. While similar to a previously solved (non-restricted) SOS model in its physical behaviour, mathematically the solution is more complex. Involving basic hypergeometric functions ${}_3ϕ_2$, it introduces a new form of solution to the lexicon of directed lattice path generating functions.

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