Tokatly I V, Vignale G
Lerhrstuhl für Theoretische Festkörperphysik, Universität Erlangen-Nurnberg, Staudtstrasse 7/B2, 91058 Erlangen, Germany.
Phys Rev Lett. 2007 Jan 12;98(2):026805. doi: 10.1103/PhysRevLett.98.026805. Epub 2007 Jan 11.
We apply the methods of continuum mechanics to the study of the collective modes of the fractional quantum Hall liquid. Our main result is that at long-wavelength, there are two distinct modes of oscillations, while previous theories predicted only one. The two modes are shown to arise from the internal dynamics of shear stresses created by the Coulomb interaction in the liquid. Our prediction is supported by recent light scattering experiments, which report the observation of two long-wavelength modes in a quantum Hall liquid.
我们将连续介质力学方法应用于分数量子霍尔液体集体模式的研究。我们的主要结果是，在长波长下，存在两种不同的振荡模式，而之前的理论只预测了一种。这两种模式被证明源于液体中库仑相互作用产生的剪应力的内部动力学。我们的预测得到了最近光散射实验的支持，这些实验报告了在量子霍尔液体中观察到两种长波长模式。
