Freericks J K, Turkowski V M, Zlatić V
Department of Physics, Georgetown University, Washington, D.C. 20057, USA.
Phys Rev Lett. 2006 Dec 31;97(26):266408. doi: 10.1103/PhysRevLett.97.266408. Epub 2006 Dec 29.
The many-body formalism for dynamical mean-field theory is extended to treat nonequilibrium problems. We illustrate how the formalism works by examining the transient decay of the oscillating current that is driven by a large electric field turned on at time t=0. We show how the Bloch oscillations are quenched by the electron-electron interactions, and how their character changes dramatically for a Mott insulator.
动态平均场理论的多体形式被扩展用于处理非平衡问题。我们通过研究在时间t = 0时开启的强电场驱动的振荡电流的瞬态衰减来说明该形式是如何工作的。我们展示了布洛赫振荡如何被电子-电子相互作用淬灭，以及对于莫特绝缘体，它们的特性如何发生显著变化。
