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Earlier we showed that the fine structure of the spectrum of amplitude variations in the results of measurements of the processes of different nature (in other words, the fine structure of the dispersion of results or the pattern of the…

综合物理 · 物理学 2007-05-23 Simon E. Shnoll

We consider biochemical reaction chains and investigate how random external fluctuations, as characterized by variance and coefficient of variation, propagate down the chains. We perform such a study under the assumption that the number of…

概率论 · 数学 2007-08-03 David F. Anderson , Jonathan C. Mattingly

A new method to quantify fluctuations in the initial state of heavy ion collisions is presented. The initial state energy distribution is decomposed with a set of orthogonal basis functions which include both angular and radial variation.…

高能物理 - 唯象学 · 物理学 2013-07-24 Christopher E Coleman-Smith , Hannah Petersen , Robert L Wolpert

Conserved-charge densities are very special observables in quantum many-body systems as, by construction, they encode information about the dynamics. Therefore, their evolution is expected to be of much simpler interpretation than that of…

统计力学 · 物理学 2024-05-30 Bruno Bertini , Katja Klobas , Mario Collura , Pasquale Calabrese , Colin Rylands

Quantum-mechanical initial conditions for the fluctuations of the geometry can be assigned in excess of a given physical wavelength. The two-point functions of the scalar and tensor modes of the geometry will then inherit corrections…

高能物理 - 理论 · 物理学 2009-11-10 Massimo Giovannini

In large asexual populations, multiple beneficial mutations arise in the population, compete, interfere with each other, and accumulate on the same genome, before any of them fix. The resulting dynamics, although studied by many authors, is…

种群与进化 · 定量生物学 2015-06-11 Daniel S. Fisher

We consider the long-time behavior of systems close to a system with a smooth first integral. Under certain assumptions, the limiting behavior, to some extent, turns out to be universal: it is determined by the first integral, the…

概率论 · 数学 2022-10-19 Mark Freidlin

We study the impact of Early Dark Energy fluctuations in the linear and non-linear regimes of structure formation. In these models the energy density of dark energy is non-negligible at high redshifts and the fluctuations in the dark energy…

宇宙学与河外天体物理 · 物理学 2014-03-14 R. C. Batista , F. Pace

Propagating fronts arising from bistable reaction-diffusion equations are a purely deterministic effect. Stochastic reaction-diffusion processes also show front propagation which coincides with the deterministic effect in the limit of small…

统计力学 · 物理学 2015-05-20 E. Khain , Y. T. Lin , L. M. Sander

The reversible reactions like A+B <-> C in the many-component diffusive system affect the diffusive properties of the constituents. The effective conjugation of irreversible processes of different dimensionality takes place due to the…

其他凝聚态物理 · 物理学 2007-05-23 Serge Shpyrko , Vladimir M. Sysoev

In the Coulomb blockade regime of a ballistic quantum dot, the distribution of conductance peak spacings is well known to be incorrectly predicted by a single-particle picture; instead, matrix element fluctuations of the residual electronic…

介观与纳米尺度物理 · 物理学 2009-08-14 L. Kaplan

Collective flow in collisions between Lead nuclei at LHC are influenced by random initial state fluctuations, especially for odd harmonics. Here we extend fluctuation studies to longitudinal fluctuations, which may have significant effect…

高能物理 - 唯象学 · 物理学 2011-12-30 Yun Cheng , Yu-Liang Yan , Dai-Mei Zhou , Xu Cai , Ben-Hao Sa , Laszlo P. Csernai

Fractional Brownian motion is a Gaussian stochastic process with stationary, long-time correlated increments and is frequently used to model anomalous diffusion processes. We study numerically fractional Brownian motion confined to a finite…

统计力学 · 物理学 2019-03-22 T. Guggenberger , G. Pagnini , T. Vojta , R. Metzler

We consider the cubic Schrodinger equation on the line, for which the scattering theory requires modifications due to long range effects. We revisit the construction of the modified wave operator, and recall the construction of its inverse,…

偏微分方程分析 · 数学 2025-07-23 Remi Carles

We study finite-size effects on the dynamics of a one-dimensional zero-range process which shows a phase transition from a low-density disordered phase to a high-density condensed phase. The current fluctuations in the steady state show…

统计力学 · 物理学 2009-11-13 Shamik Gupta , Mustansir Barma , Satya N. Majumdar

We present a one-dimensional model for diffusion in a fluctuating lattice; that is a lattice which can be in two or more states. Transitions between the lattice states are induced by a combination of two processes: one periodic…

统计力学 · 物理学 2007-05-23 Jorge A. Revelli , Carlos. E. Budde , Horacio S. Wio

Reaction-diffusion equations deliver a versatile tool for the description of reactions in inhomogeneous systems under the assumption that the characteristic reaction scales and the scales of the inhomogeneities in the reactant…

统计力学 · 物理学 2009-11-11 M. G. W. Schmidt , F. Sagues , I. M. Sokolov

Time delays, modelling the process of intracellular gene expression, have been shown to have important impacts on the dynamics of pattern formation in reaction-diffusion systems. In particular, past work has shown that such time delays can…

斑图形成与孤子 · 物理学 2022-06-28 Alec Sargood , Eamonn A. Gaffney , Andrew L. Krause

Power-law sensitivity to initial conditions, characterizing the behaviour of dynamical systems at their critical points (where the standard Liapunov exponent vanishes), is studied in connection with the family of nonlinear 1D logistic-like…

统计力学 · 物理学 2009-10-30 U. M. S. Costa , M. L. Lyra , A. R. Plastino , C. Tsallis

We study the large fluctuations of the work injected by the random force into a Brownian particle under the action of a confining harmonic potential. In particular, we compute analytically the rate function for generic uncorrelated initial…