58 citations · 232 across the 12 of their papers we have counts for
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Rigorous mean field model for CPA: Anderson model with free random variables
Peter Neu, Roland Speicher
A model of a randomly disordered system with site-diagonal random energy fluctuations is introduced. It is an extension of Wegner's -orbital model to arbitrary eigenvalue distri…
Random matrix theory for CPA: Generalization of Wegner's --orbital model
Peter Neu, Roland Speicher
We introduce a generalization of Wegner's -orbital model for the description of randomly disordered systems by replacing his ensemble of Gaussian random matrices by an ensemble…
Relaxation due to Incoherent Tunnelling in Dielectric Glasses
Peter Neu, Alois Würger
A new relaxation mechanism is shown to arise from overdamped two-level systems above a critical temperature K, thus yielding an explanation for experimental observat…
Spectra of Hamiltonians with Generalized Single-Site Dynamical Disorder
Peter Neu, Roland Speicher
Starting from the deformed commutation relations \ba a_q(t) \,a_q^†(s) \ - \ q\,a_q^†(s)\,a_q(t) \ = \ \Gam(t-s) {\bf 1} , \quad -1\ \le \ q\ \le\ 1\nn \ea with a covariance $\Gam(…