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Models of many-species ecosystems, such as the Lotka-Volterra and replicator equations, suggest that these systems generically exhibit near-extinction processes, where population sizes go very close to zero for some time before rebounding,…

Statistical Mechanics · Physics 2023-03-15 Thibaut Arnoulx de Pirey , Guy Bunin

We study the off-equilibrium response and correlation functions and the corresponding fluctuation-dissipation ratio for a purely dissipative relaxation of an O(N) symmetric vector model (Model A) below its upper critical dimension. The…

Statistical Mechanics · Physics 2008-12-18 Pasquale Calabrese , Andrea Gambassi

To fulfill the requirements for testing the photomultiplier tubes (PMTs) of the electromagnetic detec- tor at the Large High Altitude Air Shower Observatory (LHAASO), a multi-functional PMT test bench with a two dimensional scanning system…

Instrumentation and Detectors · Physics 2016-08-24 Xu Wang , Zhong-Quan Zhang , Ye Tian , Yan-Yan Du , Xiao Zhao , Fu-Wang Shen , Chang-Yu Li , Yansheng Sun , Cunfeng Feng

An unexpected dichotomic long time aging behaviour is observed in a glassy colloidal clay suspension investigated by X-Ray Photon Correlation Spectroscopy and Dynamic Light Scattering. In the long time aging regime the intensity…

Soft Condensed Matter · Physics 2023-08-29 Roberta Angelini , Laura Zulian , Andrei Fluerasu , Anders Madsen , Giancarlo Ruocco , Barbara Ruzicka

Via computer simulations we study evolution dynamics in systems of continuously moving Active Brownian Particles. The obtained results are discussed against those from the passive 2D Ising case. Following sudden quenches of uniform…

Soft Condensed Matter · Physics 2022-12-14 Florian Dittrich , Jiarul Midya , Peter Virnau , Subir K. Das

In this article, a pioneering study is presented where the intermittent current interruption method is used to characterize the aging behavior of commercial lithium ion batteries. With a very resource-efficient implementation, this method…

Chemical Physics · Physics 2021-11-09 Zeyang Geng , Torbjörn Thiringer , Matthew J. Lacey

We have studied the effect of temperature on aging dynamics of laponite suspensions by carrying out the rheological oscillatory and creep experiments. We observed that at higher temperatures the mechanism responsible for aging became faster…

Soft Condensed Matter · Physics 2010-01-26 Varun Awasthi , Yogesh M Joshi

Aging behavior is an important effect in the friction properties of solid surfaces. In this paper we investigate the temporal evolution of the static properties of a granular medium by studying the aging over time of the maximum stability…

Soft Condensed Matter · Physics 2009-11-07 F. Restagno , C. Ursini , H. Gayvallet , E. Charlaix

We present our new, fully-automated method to detect and measure the ages of star clusters in nearby galaxies, where individual stars can be resolved. The method relies purely on statistical analysis of observations and Monte-Carlo…

Using molecular dynamics computer simulations we investigate the aging dynamics of a gel. We start from a fractal structure generated by the DLCA-DEF algorithm, onto which we then impose an interaction potential consisting of a short-range…

Soft Condensed Matter · Physics 2008-12-19 M-A. Suarez , N. Kern , E. Pitard , W. Kob

We investigate some aspects of the ageing behavior observed in the contact process after a quench from its active phase to the critical point. In particular we discuss the scaling properties of the two-time response function and we…

Statistical Mechanics · Physics 2011-02-16 Florian Baumann , Andrea Gambassi

The neutrino detector of the Jiangmen Underground Neutrino Observatory (JUNO) is designed to use 20 kilotons of liquid scintillator and approximately 16,000 20-inch photomultipliers (PMTs).One of the options is to use the 20-inch R12860 PMT…

We study the out-of-equilibrium large time dynamics of a gaussian polymer chain in a quenched random potential. The dynamics studied is a simple Langevin dynamics commonly referred to as the Rouse model. The equations for the two-time…

Disordered Systems and Neural Networks · Physics 2009-11-11 Yadin Y. Goldschmidt

Photomultiplier tubes (PMTs) are widely used in particle experiments for photon detection. PMT waveform analysis is crucial for high-precision measurements of the position and energy of incident particles in liquid scintillator (LS)…

Instrumentation and Detectors · Physics 2024-12-02 Wei Jiang , Guihong Huang , Zhen Liu , Wuming Luo , Liangjian Wen , Jianyi Luo

High-quality light curves from space missions have opened up a new window on the rotational and pulsational properties of magnetic chemically peculiar (mCP) stars and have fuelled asteroseismic studies. They allow the internal effects of…

Solar and Stellar Astrophysics · Physics 2023-08-09 J. Labadie-Bartz , S. Hümmerich , K. Bernhard , E. Paunzen , M. E. Shultz

We report an investigation to establish the physical mechanisms responsible for decoherence in the generation of photon pairs from atomic ensembles, via the protocol of Duan et. al for long distance quantum communication [Nature (London)…

Quantum Physics · Physics 2009-11-11 D. Felinto , C. W. Chou , H. de Riedmatten , S. V. Polyakov , H. J. Kimble

Yttria-stabilized tetragonal zirconia polycrystals (3Y-TZP) with different microstructures were elaborated. The isothermal tetragonal to monoclinic transformation was investigated at 134 {\deg}C in steam by X-ray diffraction, Atomic Force…

We present an improved statistical method for calculation of mean lifetime of nuclei in a decay chain with uncertain relation between mother and daughter nuclei. The method is based on formation of time distribution of intervals between…

Nuclear Theory · Physics 2017-03-08 J. M. Puzović , D. Manić , L. J. Nađđerđ

Aging is a multidimensional process where phenotypes change at varying rates. Longitudinal studies of aging typically involve following a cohort of individuals over the course of several years. This design is hindered by cost, attrition,…

The properties of nanoparticles are determined by their size and structure. When exposed to external pressure P, their structural properties can change. The improvement or degradation of the properties of the samples depending on time is…