arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0706.4152cond-mat.stat-mech
收藏

从相变到准吸收态的磁滞回线的标度

Scaling of hysteresis loops at phase transitions into a quasiabsorbing state

Kazumasa A. Takeuchi

摘要:

模型经历一个相变的吸收状态弱打破了一个非常低的自发成核率的增加表现出滞后回线的宽度$Δλ$代数依赖于斜坡率$r$。分析论证和数值模拟表明,$Δλ\sim r^κ$与$κ= 1/(β'+1)$,其中$β'$是临界指数控制的生存概率的种子阈值附近。这些结果解释了以前在液晶对流实验中观察到的类似滞后标度。这一现象在其他各种实验系统中也会发生。

英文摘要:

Models undergoing a phase transition to an absorbing state weakly broken by the addition of a very low spontaneous nucleation rate are shown to exhibit hysteresis loops whose width $Δλ$ depends algebraically on the ramp rate $r$. Analytical arguments and numerical simulations show that $Δλ\sim r^κ$ with $κ= 1/(β'+1)$, where $β'$ is the critical exponent governing the survival probability of a seed near threshold. These results explain similar hysteresis scaling observed before in liquid crystal convection experiments. This phenomenon is conjectured to occur in a variety of other experimental 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。

↑