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arXiv 0907.0112cond-mat.stat-mechcond-mat.soft
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一维三重态产生模型中的吸收态相变

On the absorbing-state phase transition in the one-dimensional triplet creation model

Geza Odor, Ronald Dickman

摘要:

我们用数值模拟和n位近似研究了晶格反应扩散模型3A -> 4A,A -> 0("三重态产生”)。模拟结果提供了一个不连续的相变在高扩散速率的证据。在这一制度的序参量似乎是一个不连续的函数的创建率;没有证据的活性和吸收阶段之间的稳定界面被发现,基于一个有效的映射到一个修改紧凑的定向渗流过程,然而,应认为,过渡是连续的,尽管看似不连续的相变建议有限系统的研究。

英文摘要:

We study the lattice reaction diffusion model 3A -> 4A, A -> 0 (``triplet creation") using numerical simulations and n-site approximations. The simulation results provide evidence of a discontinuous phase transition at high diffusion rates. In this regime the order parameter appears to be a discontinuous function of the creation rate; no evidence of a stable interface between active and absorbing phases is found. Based on an effective mapping to a modified compact directed percolation process, shall nevertheless argue that the transition is continuous, despite the seemingly discontinuous phase transition suggested by studies of finite systems.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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