标题： 可能的Aoki相对于交错费米子 显示英文标题

标题： A Possible Aoki Phase for Staggered Fermions

摘要： 交错费米子的相图在交错手征拉格朗日量的框架下进行讨论，扩展了该主题的先前工作。 当离散化误差显著时，对于交错费米子可能存在类似Aoki的相，在此相中，剩余的SO(4)味对称性会破缺为SO(3)。 我们显式求解了三味简并质量情况下的质量谱，并定性地讨论了2+1味的情况。 从数值结果来看，当前的模拟处于交错Aoki相之外。 对于未来使用更改进的交错作用量的模拟，似乎不太可能在任何现实的夸克质量值下处于Aoki相，尽管证据尚不充分。 显示英文摘要

摘要： The phase diagram for staggered fermions is discussed in the context of the staggered chiral Lagrangian, extending previous work on the subject. When the discretization errors are significant, there may be an Aoki-like phase for staggered fermions, where the remnant SO(4) taste symmetry is broken down to SO(3). We solve explicitly for the mass spectrum in the 3-flavor degenerate mass case and discuss qualitatively the 2+1-flavor case. From numerical results we find that current simulations are outside the staggered Aoki phase. As for near-future simulations with more improved versions of the staggered action, it seems unlikely that these will be in the Aoki phase for any realistic value of the quark mass, although the evidence is not conclusive.