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The mechanical properties of cells, which influence the properties of the tissue they belong to, are controlled by various mechanisms. Bi et al. theoretically demonstrated that density-independent rigidity transition occurs in…

软凝聚态物质 · 物理学 2018-02-27 H. Nogucci

We introduce a simple two-dimensional spin model with short-range interactions which shows glassy behavior despite a Hamiltonian which is completely homogeneous and possesses no randomness. We solve exactly for both the static partition…

统计力学 · 物理学 2009-10-30 M. E. J. Newman , Cristopher Moore

For harmonic-trapped atomic systems, we report system-independent non-adiabatic features in the response to interaction ramps. We provide results for several different systems in one, two, and three dimensions: bosonic and fermionic Hubbard…

量子气体 · 物理学 2013-05-06 Masudul Haque , F. E. Zimmer

Granular materials jam when developing a network of contact forces able to resist the applied stresses. Through numerical simulations of the dynamics of the jamming process, we show that the jamming transition does not occur when the…

The relaxation dynamics of many disordered systems, such as structural glasses, proteins, granular materials or spin glasses, is not completely frozen even at very low temperatures. This residual motion leads to a change of the properties…

软凝聚态物质 · 物理学 2009-10-31 Walter Kob , Francesco Sciortino , Piero Tartaglia

We study relaxation and rheology of dense athermal suspensions of frictionless particles close below the jamming density. Our key quantity, the relaxation time---determined from the exponential decay of the energy after the shearing has…

软凝聚态物质 · 物理学 2013-02-27 Peter Olsson

We investigate a general scenario for ``glassy'' or ``jammed'' systems driven by an external, non-conservative force, analogous to a shear force in a fluid. In this scenario, the drive results in the suppression of the usual aging process,…

软凝聚态物质 · 物理学 2009-10-31 Ludovic Berthier , Jean-Louis Barrat , Jorge Kurchan

The nature of defects in amorphous materials, analogous to vacancies and dislocations in crystals, remains elusive. Here we explore their nature in a three-dimensional microscopic model glass-former which describes granular, colloidal,…

软凝聚态物质 · 物理学 2019-11-13 Camille Scalliet , Ludovic Berthier , Francesco Zamponi

The glassy cytoplasm, crowded with bio-macromolecules, is fluidized in living cells by mechanical energy derived from metabolism. Characterizing the living cytoplasm as a non-equilibrium system is crucial in elucidating the intricate…

生物物理 · 物理学 2023-07-28 K. Umeda , K. Nishizawa , W. Nagao , S. Inokuchi , Y. Sugino , H. Ebata , D. Mizuno

We study the dynamics of the quantum phase distribution associated with the reduced density matrix of a system for a number of situations of practical importance, as the system evolves under the influence of its environment, interacting via…

量子物理 · 物理学 2009-11-13 Subhashish Banerjee , R. Srikanth

We measure the displacement response of a frictional multicontact interface between identical polymer glasses to a biased shear force oscillation. We evidence the existence, for maximum forces close below the nominal static threshold, of a…

材料科学 · 物理学 2009-11-07 L. Bureau , T. Baumberger , C. Caroli

We study numerically the yielding transition of a two dimensional model glass subjected to athermal quasi-static cyclic shear deformation, with the aim of investigating the effect on the yielding behaviour of the degree of annealing, which…

软凝聚态物质 · 物理学 2022-03-02 Himangsu Bhaumik , Giuseppe Foffi , Srikanth Sastry

We analyze the dynamics of two atoms with a short-ranged pair interaction in a one-dimensional harmonic trap with time-dependent frequency. Our analysis is focused on two representative cases: (i) a sudden change of the trapping frequency…

量子气体 · 物理学 2019-07-15 M. Ebert , A. Volosniev , H. -W. Hammer

We study the thermal effects on the frictional properties of atomically thin sheets. We simulate a simple model based on the Prandtl-Tomlinson model that reproduces the layer dependence of friction and strengthening effects seen in AFM…

介观与纳米尺度物理 · 物理学 2021-06-08 J Roadnight Sheehan , David Andersson , Astrid S. de Wijn

We review the mechanism for transport in strongly anharmonic chains of oscillators near the atomic limit where all oscillators are decoupled. In this regime, the motion of most oscillators remains close to integrable, i.e. quasi-periodic,…

统计力学 · 物理学 2020-01-08 Wojciech De Roeck , François Huveneers

The postulate of the existence of a jamming phase diagram (Liu and Nagel, Nature 396, 21 EP (1998aa)) provides a theoretical basis for the classification of a wide range of amorphous solids (colloidal, molecular and emulsion glasses,…

软凝聚态物质 · 物理学 2020-02-04 Ruru Li , Daniel Lester

We study the emergence of a crossover from entropically driven to thermally activated dynamics in different versions of the `entropic' phase space model introduced by Barrat and M\'ezard, and previously considered in the zero temperature…

无序系统与神经网络 · 物理学 2009-11-10 Eric M. Bertin

We use large-scale molecular dynamics simulations to study the kinetics of the liquid-gas phase separation if the temperature is lowered across the glass transition of the dense phase. We observe a gradual change from phase separated…

统计力学 · 物理学 2011-06-01 Vincent Testard , Ludovic Berthier , Walter Kob

We present a new formulation of the jamming phase diagram for a class of glass-forming fluids consisting of spheres interacting via finite-ranged repulsions at temperature $T$, packing fraction $\phi$ or pressure $p$, and applied shear…

软凝聚态物质 · 物理学 2014-04-04 Thomas K. Haxton , Michael Schmiedeberg , Andrea J. Liu

The dissipative mechanism in weakly collisional plasma is a topic that pervades decades of studies without a consensus solution. We compare several energy dissipation estimates based on energy transfer processes in plasma turbulence and…

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