Zobrazeno 1 - 10
of 228
pro vyhledávání: '"Flenner, Elijah"'
Autor:
Flenner, Elijah, Szamel, Grzegorz
Comprehending sound damping is integral to understanding the anomalous low temperature properties of glasses. After decades of theoretical and experimental studies, Rayleigh scattering scaling of the sound attenuation coefficient with frequency, $\Ga
Externí odkaz:
http://arxiv.org/abs/2406.18667
Autor:
Szamel, Grzegorz, Flenner, Elijah
We examine the dependence of the dynamics of three-dimensional active fluids on persistence time $\tau_p$ and average self-propulsion force $f$. In the large persistence time limit many properties of these fluids become $\tau_p$-independent. These pr
Externí odkaz:
http://arxiv.org/abs/2307.01298
Low-frequency vibrational harmonic modes of glasses are frequently used to understand their universal low-temperature properties. One well studied feature is the excess low-frequency density of states over the Debye model prediction. Here we examine
Externí odkaz:
http://arxiv.org/abs/2211.07543
Publikováno v:
Phys. Rev. Lett. 131, 119801 (2023)
Comment on `Fickian Non-Gaussian Diffusion in Glass-Forming Liquids', by Rusciano et al., Phys. Rev. Lett. 128, 168001 (2022). In a recent Letter, Rusciano et al. examined the statistics of individual particles displacements in two-dimensional glass-
Externí odkaz:
http://arxiv.org/abs/2210.07119
Autor:
Szamel, Grzegorz, Flenner, Elijah
Sound attenuation in low temperature amorphous solids originates from their disordered structure. However, its detailed mechanism is still being debated. Here we analyze sound attenuation starting directly from the microscopic equations of motion. We
Externí odkaz:
http://arxiv.org/abs/2107.14254
Glasses possess more low-frequency vibrational modes than predicted by Debye theory. These excess modes are crucial for the understanding the low temperature thermal and mechanical properties of glasses, which differ from those of crystalline solids.
Externí odkaz:
http://arxiv.org/abs/2107.01505
We derive a distribution function for the position of a tagged active particle in a slowly varying in space external potential, in a system of interacting active particles. The tagged particle distribution has the form of the Boltzmann distribution b
Externí odkaz:
http://arxiv.org/abs/2102.11240
Autor:
Szamel, Grzegorz, Flenner, Elijah
Model systems of self-propelled particles reproduce many phenomena observed in laboratory active matter systems that defy our thermal equilibrium-based intuition. In particular, in stationary states of self-propelled systems, it is recognized that ve
Externí odkaz:
http://arxiv.org/abs/2101.11768
Publikováno v:
Phys. Rev. E 105, 014605 (2022)
Liquids near the glass transition exhibit dynamical heterogeneity, i.e. correlated regions in the liquid relax at either a much faster rate or a much slower rate than the average. This collective phenomenon has been characterized by measurements of a
Externí odkaz:
http://arxiv.org/abs/2012.12240
Autor:
Flenner, Elijah, Szamel, Grzegorz
Publikováno v:
Phys. Rev. E 102, 022607 (2020)
Active matter systems are driven out of equilibrium at the level of individual constituents. One widely studied class are systems of athermal particles that move under the combined influence of interparticle interactions and self-propulsions, with th
Externí odkaz:
http://arxiv.org/abs/2004.11925