69 citations · 175 across the 9 of their papers we have counts for
10 papers
On non-phononic modes and glassy dynamics
Felix C. Mocanu, Dmytro Khomenko, Matteo Paoluzzi +4
The relationship between vibrational modes and glassy dynamics has been an important and controversial topic of study for many decades. We introduce a family of glass-forming model…
Classical versus quantum Anderson localization in disordered systems
Stefano Mossa, Giancarlo Ruocco, Walter Schirmacher
We investigate Anderson localization in three-dimensional disordered systems by comparing scalar classical waves with mass and force-constant disorder to electronic tight-binding m…
Internal Stresses as Origin of the Anomalous Low-Temperature Specific Heat in Glasses
Walter Schirmacher, Giancarlo Ruocco
We apply a recently developed theory of the nonphononic vibrational density of states (DOS) in glasses to investigate the impact of local frozen-in stresses on the low-temperature…
Further testing the validity of generalized heterogeneous-elasticity theory for low-frequency excitations in structural glasses
Walter Schirmacher, Matteo Paoluzzi, Felix Cosmin Mocanu +4
We summarize the salient features of our theory of non-phononic vibrational excitations in glasses [W. Schirmacher et al., Nature Comm. 15, 3107 (2024)]. Next, we provide further e…
Exotic collective dynamics in molten Carbon
Taras Bryk, Giancarlo Ruocco, Jean-François Wax +1
Collective longitudinal and transverse propagating modes in molten Carbon at ~K and pressure range - GPa are reported from {\it ab initio} based as well as machine…
Absence of a boson peak in anharmonic phonon models with Akhiezer-type damping
A. Shvaika, M. Shpot, W. Schirmacher +2
In a recent article M. Baggioli and A. Zaccone (Phys. Rev. Lett. {\bf 112}, 145501 (2019)) claimed that an anharmonic damping, leading to a sound attenuation proportional to …
Comment on "Universal effect of excitation dispersion on the heat capacity and gapped states in fluids"
T. Bryk, N. Jakse, I. Mryglod +2
We discuss the validity of recent results in [Phys. Rev. Lett. 125, 125501 (2020)] on an universal relation between the heat capacity and dispersions of collective excitations in l…
Coherent-Potential approximation for diffusion and wave propagation in topologically disordered systems
S. Köhler, G. Ruocco, W. Schirmacher
Using Gaussian integral transform techniques borrowed from functional-integral field theory and the replica trick we derive a version of the coherent-potential approximation (CPA)…
Spatio-temporal anomalous diffusion in heterogeneous media by NMR
M. Palombo, A. Gabrielli, S. De Santis +3
For the first time, the diffusion phase diagram in highly confined colloidal systems, predicted by Continuous Time Random Walk (CTRW), is experimentally obtained. Temporal and spat…
Vibrational excitations in systems with correlated disorder
W. Schirmacher, B. Schmid, C. Tomaras +4
We investigate a -dimensional model ( = 2,3) for sound waves in a disordered environment, in which the local fluctuations of the elastic modulus are spatially correlated with…