论文标题
多组分效率系统中的符号铁磁和相变
Symplectic ferromagnetism and phase transitions in multi-component fermionic systems
论文作者
论文摘要
在本文中，我们研究了具有符号型（SP（4）或同构（5））对称性的多组分效率系统中的巡回铁磁相。已经考虑了两个不同的微观模型，并提出了一种有效的田间理论来研究非磁性磁性相变的临界行为。已经表明，这种系统表现出与旋转中不同的铁磁和关键行为 - $ \ frac 12 $ fermionic系统或具有SU（n）对称性的高自旋系统中的不同。还讨论了我们将结果扩展到具有SP（2N）对称性的较高自旋系统。
In this paper, we study the itinerant ferromagnetic phase in multi-component fermionic systems with symplectic (Sp(4), or isomorphically SO(5)) symmetry. Two different microscopic models have been considered and an effective field theory has been proposed to study the critical behavior of the nonmagnetism-magnetism phase transition. It has been shown that such systems exhibit intriguing ferromagnetism and critical behavior that different from those in spin-$\frac 12$ fermionic systems, or in high-spin systems with SU(N) symmetry. An extension of our results to higher spin systems with Sp(2N) symmetry has also been discussed.
