Altman Ehud, Kafri Yariv, Polkovnikov Anatoli, Refael Gil
Department of Physics, Harvard University, Cambridge, Massachusetts 02138, USA.
Phys Rev Lett. 2004 Oct 8;93(15):150402. doi: 10.1103/PhysRevLett.93.150402. Epub 2004 Oct 7.
We study one-dimensional disordered bosons at large commensurate filling. Using a real space renormalization group approach, we find a new random fixed point which controls a phase transition from a superfluid to an incompressible Mott glass. The transition can be tuned by changing the disorder distribution even with vanishing interactions. We derive the properties of the transition, which suggest that it is in the Kosterlitz-Thouless universality class.
我们研究大的 commensurate 填充下的一维无序玻色子。使用实空间重整化群方法，我们发现了一个新的随机不动点，它控制着从超流体到不可压缩莫特玻璃的相变。即使相互作用消失，也可以通过改变无序分布来调节该转变。我们推导了该转变的性质，这表明它属于科斯特利茨 - Thouless 普适类。
