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The Casimir effect in quantum electrodynamics (QED) is perhaps the best-known example of fluctuation-induced long-ranged force acting on objects (conducting plates) immersed in a fluctuating medium (quantum electromagnetic field in vacuum).…

统计力学 · 物理学 2009-07-13 Andrea Gambassi

The dynamics of a single fluid bilayer membrane in an external hydrodynamic flow field is considered. The deterministic equation of motion for the configuration is derived taking into account both viscous dissipation in the surrounding…

软凝聚态物质 · 物理学 2009-10-31 Udo Seifert

Active motions of a biological membrane can be induced by non-thermal fluctuations that occur in the outer environment of the membrane. We discuss the dynamics of a membrane interacting hydrodynamically with an active wall that exerts…

软凝聚态物质 · 物理学 2016-05-18 Kento Yasuda , Shigeyuki Komura , Ryuichi Okamoto

Diffusion in cell membranes is not just simple two-dimensional Brownian motion, but typically depends on the timescale of the observation. The physical origins of this anomalous sub-diffusion are unresolved, and model systems capable of…

生物物理 · 物理学 2017-10-25 H. L. E. Coker , M. R. Cheetham , D. R. Kattnig , Y. J. Wang , S. Garcia-Manyes , M. I. Wallace

This paper is the continuation of our earlier paper, where we proved t^{1/3}-order of current fluctuations across the characteristics in a class of one dimensional interacting systems with one conserved quantity. We also claimed two models…

概率论 · 数学 2012-05-01 Márton Balázs , Júlia Komjáthy , Timo Seppäläinen

Quasi-two dimensional itinerant fermions in the Anti-Ferro-Magnetic (AFM) quantum-critical region of their phase diagram, such as in the Fe-based superconductors or in some of the heavy-fermion compounds, exhibit a resistivity varying…

强关联电子 · 物理学 2015-11-10 C. M. Varma

We have constructed a model for the kinetics of rupture of membranes under tension, applying physical principles relevant to lipid bilayers held together by hydrophobic interactions. The membrane is characterized by the bulk compressibility…

生物物理 · 物理学 2009-11-07 Luc Fournier , Bela Joos

We explore the critical properties of the recently discovered finite-time dynamical phase transition in the non-equilibrium relaxation of Ising magnets after a temperature quench. The transition is characterized by a sudden switch in the…

统计力学 · 物理学 2025-03-03 Nalina Vadakkayil , Massimiliano Esposito , Jan Meibohm

We use a long, all-atom molecular dynamics (MD) simulation combined with theoretical modeling to investigate the dynamics of selected lipid atoms and lipid molecules in a hydrated diyristoyl-phosphatidylcholine (DMPC) lipid bilayer. From…

生物物理 · 物理学 2009-11-13 Elijah Flenner , Jhuma Das , Maikel C. Rheinstadter , Ioan Kosztin

We investigate the relation between two-time, multi-spin, correlation and response functions in the non-equilibrium critical dynamics of Ising models in d=1 and d=2 spatial dimensions. In these non-equilibrium situations, the…

统计力学 · 物理学 2007-05-23 Peter Mayer , Ludovic Berthier , Juan P. Garrahan , Peter Sollich

In this work we study the consequences of a longitudinal Bjorken expansion and a Hubble-like temperature cooling scenario on a 1+1D non-linear model of the diffusive dynamics of fluctuations in the net-baryon density. The equilibrium…

核理论 · 物理学 2023-02-01 Grégoire Pihan , Marcus Bluhm , Masakiyo Kitazawa , Taklit Sami , Marlene Nahrgang

Glass-forming liquids display strong fluctuations -- dynamical heterogeneities -- near their glass transition. By numerically simulating a binary Weeks-Chandler-Andersen liquid and varying both temperature and timescale, we investigate the…

无序系统与神经网络 · 物理学 2011-08-15 Azita Parsaeian , Horacio E. Castillo

We present large-scale Monte Carlo results for the dynamical critical exponent z and the spatio-temporal two-point correlation function of a (2+1)-dimensional quantum XY model with bond dissipation, proposed to describe a quantum critical…

强关联电子 · 物理学 2011-11-18 Iver Bakken Sperstad , Einar B. Stiansen , Asle Sudbø

By means of inelastic neutron scattering we investigate finite temperature dynamics in the quantum spin ladder compound (C$_5$H$_{12}$N)$_2$CuBr$_4$ (BPCB) near the magnetic field induced quantum critical point with dynamical exponent…

强关联电子 · 物理学 2018-12-31 D. Blosser , V. K. Bhartiya , D. J. Voneshen , A. Zheludev

We discuss the dynamics of a bilayer membrane with partial slip boundary conditions between the monolayers and the bulk fluid. Using Onsager's variational principle to account for the associated dissipations, we derive the coupled dynamic…

软凝聚态物质 · 物理学 2018-07-18 Kento Yasuda , Ryuichi Okamoto , Shigeyuki Komura , Jean-Baptiste Fournier

In this paper, we introduce a freeze-out scheme for the dynamical models near the QCD critical point through coupling the decoupled classical particles with the order parameter field. With a modified distribution function that satisfies…

核理论 · 物理学 2016-09-14 Lijia Jiang , Pengfei Li , Huichao Song

Changes of external parameters in proximity of critical point can increase thermal fluctuations of tubular lipid membrane (TLM) and result in variation of the membrane shape. The phase transitions in the system are shown to be controlled by…

软凝聚态物质 · 物理学 2015-01-05 I. Yu. Golushko , S. B. Rochal , A. Parmeggiani , V. L. Lorman

We experimentally study the critical properties of the non-equilibrium solid-liquid-like transition that takes place in vibrated granular matter. The critical dynamics is characterized by the coupling of the density field with the…

统计力学 · 物理学 2015-06-23 Gustavo Castillo , Nicolás Mujica , Rodrigo Soto

We present a finite temperature Monte Carlo study of the XY-model in the vortex representation, and study its dynamical critical behavior in two limits. The first neglects magnetic field fluctuations, corresponding to the absence of…

超导电性 · 物理学 2016-08-31 Jack Lidmar , Mats Wallin , Carsten Wengel , S. M. Girvin , A. P. Young

We present an empirical analysis of the microstructure of financial markets and, in particular, of the static and dynamic properties of liquidity. We find that on relatively large time scales (15 minutes) large price fluctuations are…

交易与市场微观结构 · 定量金融 2015-12-09 Francesco Corradi , Andrea Zaccaria , Luciano Pietronero