期刊
COMMUNICATIONS IN MATHEMATICAL PHYSICS
卷 345, 期 2, 页码 659-673出版社
SPRINGER
DOI: 10.1007/s00220-015-2474-x
关键词
-
资金
- Isaac Newton Institute for Mathematical Sciences, Cambridge
- AMS-Simons Travel Grant
- NSF [DMS-1401204]
We consider isotropic XY spin chains whose magnetic potentials are quasiperiodic and the effective one-particle Hamiltonians have absolutely continuous spectra. For a wide class of such XY spin chains, we obtain lower bounds on their Lieb-Robinson velocities b in terms of group velocities of their effective Hamiltonians: b >= ess sup([0,1]) 2/pi dE/dN. where E is considered as a function of the integrated density of states.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据