58 citations · 232 across the 12 of their papers we have counts for
9 papers · 1 filter
Spectral diffusion on ultralong time scales in low temperature glasses
Peter Neu, David R. Reichman, Robert J. Silbey
A dynamical theory is constructed to describe spectral diffusion in glasses in the temperature range near 1 Kelvin on long time scales. The theory invokes interacting tunneling cen…
Relaxation dynamics of multi-level tunneling systems
P. Neu, A. Heuer
A quantum mechanical treatment of an asymmetric double-well potential (DWP) interacting with a heat bath is presented for circumstances where the contribution of higher vibrational…
Some comments on the nature of universal properties in low-temperature glasses
David R. Reichman, Peter Neu, Robert J. Silbey
We discuss the recent theory of Burin and Kagan that attempts to explain the existence of universal low temperature properties in amorphous solids. We suggest a realistic experimen…
Cumulant Expansions and the Spin-Boson Problem
D. R. Reichman, F. L. H. Brown, P. Neu
The dynamics of the dissipative two-level system at zero temperature is studied using three different cumulant expansion techniques. The relative merits and drawbacks of each techn…
Generalized Bloch equations for a strongly driven tunneling system
Peter Neu, Jochen Rau
Using the Robertson projection operator formalism, we derive generalized Bloch equations which describe the dynamics of a biased two-level tunneling system strongly driven by an ex…
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…