空间变化驱动下颗粒系统中的吸收态转变
Absorbing-state transitions in particulate systems under spatially varying driving
AI总结：
本文采用改进的随机组织模型研究空间非均匀驱动颗粒系统的吸收态转变，发现平滑驱动可映射至均匀相图，而不连续驱动会改变相边界和活性粒子比例指数。
摘要：
我们使用改进的随机组织模型研究空间非均匀驱动下颗粒系统中的吸收态转变。对于平滑变化的驱动，稳态结果可映射到均匀吸收态相图，其中吸收态与扩散态之间边界的位置对驱动波长不敏感。在这里，该现象学可由我们提出的一维连续模型很好地描述。对于不连续变化的驱动，与均匀情形相比，吸收相边界的位置以及表征活性粒子比例的指数均发生改变。
英文摘要：
We study the absorbing state transition in particulate systems under spatially inhomogeneous driving using a modified random organization model. For smoothly varying driving the steady state results map onto the homogeneous absorbing state phase diagram, with the position of the boundary between absorbing and diffusive states being insensitive to the driving wavelength. Here the phenomenology is well-described by a one-dimensional continuum model that we pose. For discontinuously varying driving the position of the absorbing phase boundary and the exponent characterising the fraction of active particles are altered relative to the homogeneous case.
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