论文标题
有限同胞性手性扰动理论中磁性涡流晶格的声子模式
Phonon modes of magnetic vortex lattices in finite isospin chiral perturbation theory
论文作者
论文摘要
我们通过将准杂型波动引入晶格并计算与光学和声学模式相关的分散关系，研究了与上临界点附近有限同源性手性扰动理论相关的语音子模式。我们发现其中一种声学模式是无质量的，并且其用于小型横向准疗法的能量是四重奏（由于存在同源化学势），这比Abelian Higgs模型（AHM）的“超级托法”（二次无质量）模式明显柔和。由于存在AHM中不存在的导数相互作用，因此纵向模式的速度取决于Isospin化学势和外部磁场。我们的结果表明，应重新审视有限同胞QCD中有序晶格的标准假设，并应考虑涡流液体或气体的意大利面时阶段的存在。
We study phonon modes associated with magnetic vortex lattices of finite isospin chiral perturbation theory near the upper critical point by introducing quasimomentum fluctuations to the lattice and calculate dispersion relations associated with the optical and acoustic modes. We find that one of the acoustic modes is massless and that its energy for small transverse quasimomentum is quartic (due the presence of an isospin chemical potential), which is significantly softer than the "supersoft" (quadratic) massless mode of the Abelian Higgs Model (AHM). Due to the presence of derivative interactions, which is absent in the AHM, the speed of the longitudinal mode depends on both the isospin chemical potential and the external magnetic field. Our results suggest that the standard assumption of an ordered lattice in finite isospin QCD should be revisited and the existence of a disordered spaghetti phase of a vortex liquid or gas, should be considered.
