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cond-mat.dis-nn2000
Dynamical Scaling Properties of Electrons in Quantum Systems with Multifractal Eigenstates
Jianxin Zhong, Zhenyu Zhang, Michael Schreiber +2
We study the intricate relationships between the dynamical scaling properties of electron wave packets and the multifractality of the eigenstates in quantum systems. Numerical simu…
cond-mat.mes-hall2000
The Edge-State Theory of Integer-Quantum-Hall-Effect to Insulator Transition
X. R. Wang, X. C. Xie, Q. Niu +1
Direct transitions, driven by disorder, from several integral quantum Hall states to an insulator have been observed in experiment. This finding is enigmatic in light of a theoreti…
cond-mat.str-el2000
The role of Berry phase in the spectrum of order parameter dynamics: a new perspective on Haldane's conjecture on antiferromagnetic spin chains
Yue Yu, Qian Niu
We formulate the dynamics of local order parameters by extending the recently developed adiabatic spinwave theory involving the Berry curvature, and derive a formula showing explic…