Dynamic phase transition in a rotating external field.
Dynamic phase transition in a rotating external field.
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旋转外场中的动态相变。
DOI：
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发表时间：
2007
期刊：
影响因子：
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通讯作者：
H. Fujisaka
中科院分区：
文献类型：
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作者：
N. Fujiwara;Takeo Kobayashi;H. Fujisaka
研究了旋转外场中各向异性XY自旋系统的Ginzburg-Landau模型的动态相变。我们观察到几种类型的振荡，极限环，准周期振荡和混沌运动。研究发现，极限环振荡的周期性可以是外加场周期的数倍，系统出现准周期振荡的两种情形是：鞍结分岔和霍普夫分岔。此外，本文报道了在动态相变的背景下的混沌行为的发现，并存在两种类型的混沌与不具有某种对称性。
Dynamic phase transition in the Ginzburg-Landau model of the anisotropic XY spin system in a rotating external field is studied. We observe several types of oscillations, limit cycles, quasiperiodic oscillations and chaotic motions. It is found that limit cycle oscillations can have the periodicity of multiple times of the period of the applied field and that the system shows two kinds of scenarios leading to the onset of quasiperiodic oscillations, i.e., the saddle-node and Hopf bifurcations. Furthermore, this paper reports the findings of chaotic behaviors in the context of dynamic phase transition and that there exist two types of chaos with and without a certain kind of symmetry.