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Measuring the thermal conductivity ($\kappa$) of water at extreme conditions is a challenging task and few experimental data are available. We predict $\kappa$ for temperatures and pressures relevant to the conditions of the Earth mantle,…

材料科学 · 物理学 2023-05-10 Cunzhi Zhang , Marcello Puligheddu , Linfeng Zhang , Roberto Car , Giulia Galli

Synapses change on multiple timescales, ranging from milliseconds to minutes, due to a combination of both short- and long-term plasticity. Here we develop an extension of the common Generalized Linear Model to infer both short- and…

神经元与认知 · 定量生物学 2022-08-15 Ganchao Wei , Ian H. Stevenson

Ice shell dynamics are an important control on the habitability of icy ocean worlds. Here we present a systematic study evaluating the effect of temperature-dependent material properties on these dynamics. We review the published thermal…

地球与行星天体物理 · 物理学 2021-04-07 Evan Carnahan , Natalie S. Wolfenbarger , Jacob S. Jordan , Marc A. Hesse

Automatically monitoring and quantifying stress-induced thermal dynamic information in real-world settings is an extremely important but challenging problem. In this paper, we explore whether we can use mobile thermal imaging to measure the…

人机交互 · 计算机科学 2019-05-14 Youngjun Cho , Nadia Bianchi-Berthouze , Manuel Oliveira , Catherine Holloway , Simon Julier

We use molecular dynamics simulations to study the dynamics of an ensemble of interacting self-propelled semi-flexible polymers in contact with a thermal bath. Our intention is to model complex systems of biological interest. We find that…

软凝聚态物质 · 物理学 2011-05-06 Davide Loi , Stefano Mossa , Leticia F. Cugliandolo

Neurons in cortical circuits exhibit coordinated spiking activity, and can produce correlated synchronous spikes during behavior and cognition. We recently developed a method for estimating the dynamics of correlated ensemble activity by…

神经元与认知 · 定量生物学 2013-12-17 Hideaki Shimazaki

We outline a general approach to the computation of transport properties of interacting systems at low temperetures and frequencies. We show that if the fixed point and the irrelevant operators around it are known, then by studying the…

强关联电子 · 物理学 2009-11-10 Natan Andrei , Efrat Shimshoni , Achim Rosch

The understanding of the dynamics of nonequilibrium cooling and heating processes at the nanoscale is still an open problem. These processes can follow surprising relaxation paths due to, e.g., memory effects, which significantly alter the…

介观与纳米尺度物理 · 物理学 2021-09-29 Andrei Militaru , Antonio Lasanta , Martin Frimmer , Luis L. Bonilla , Lukas Novotny , Raul A. Rica

A simple and computationally efficient algorithm enables implementing negative temperature values in a spin dynamics simulation. The algorithm uses a Langevin spin dynamics thermostat with a negative damping parameter, enabling the…

材料科学 · 物理学 2024-03-05 Pui-Wai Ma , Sergei L. Dudarev

Mechanical algesia is an important process for the preservation of living organisms, allowing potentially life-saving reflexes or decisions when given body parts are stressed. Yet, its various underlying mechanisms remain to be fully…

生物物理 · 物理学 2021-02-09 Tom Vincent-Dospital , Renaud Toussaint

Brownian relaxation is one of the primary mechanisms that allows magnetic nanoparticles (MNPs) to convert magnetic energy into thermal energy under an excitation magnetic field. Accurately characterizing the MNPs' magnetization dynamics…

Transmission lines are vital components in power systems. Tripping of transmission lines caused by over-temperature is a major threat to the security of system operations, so it is necessary to efficiently simulate line temperature under…

计算工程、金融与科学 · 计算机科学 2017-09-29 Rui Yao , Kai Sun , Feng Liu , Shengwei Mei

In most interacting many-body systems associated with some "emergent phenomena," we can identify sub-groups of degrees of freedom that relax on dramatically different time-scales. Time-scale separation of this kind is particularly helpful…

统计力学 · 物理学 2018-03-21 Pavel Chvykov , Jeremy England

We investigate the memory effect in a simple model for glassy relaxation, a trap model with a Gaussian density of states. In this model thermal equilibrium is reached at all finite temperatures and therefore we can consider jumps from low…

软凝聚态物质 · 物理学 2015-05-27 Gregor Diezemann , Andreas Heuer

In this paper, we applied a deep neural network to study the issue of knowledge transferability between statistical mechanics models. The following computer experiment was conducted. A convolutional neural network was trained to solve the…

无序系统与神经网络 · 物理学 2024-11-21 Diana Sukhoverkhova , Lev Shchur

Low-power wireless networks, especially in outside deployments, are exposed to a wide range of temperatures. The detrimental effect of high temperatures on communication quality is well known. To investigate these influences under…

网络与互联网体系结构 · 计算机科学 2014-12-09 Florian Schmidt , Matteo Ceriotti , Niklas Hauser , Klaus Wehrle

Quantum non-Markovianity represents memory during the system dynamics, which is typically weakened by the temperature. We here study the effects of environmental temperature on the non-Markovianity of an open quantum system by virtue of…

量子物理 · 物理学 2018-06-13 Zhong-Xiao Man , Yun-Jie Xia , Rosario Lo Franco

In Phys. Rev. Lett. 91 167206 (2003), Sun et al. study memory effects in an interacting nanoparticle system with specific temperature and field protocols. The authors claim that the observed memory effects originate from spin-glass dynamics…

无序系统与神经网络 · 物理学 2009-11-10 M. Sasaki , P. E. Jönsson , H. Takayama , P. Nordblad

The dynamics of active particles is of interest at many levels and is the focus of theoretical and experimental research. There have been many attempts to describe the dynamics of particles affected by random active forces in terms of an…

统计力学 · 物理学 2020-01-08 Dan Wexler , Nir S. Gov , Kim Ø. Rasmussen , Golan Bel

This paper deals with an analytical modeling of heat transfers simulating a new radiation calorimeter operating in a temperature range from -50 {\deg}C to 150 {\deg}C. The aim of this modeling is the evaluation of the feasibility and…

仪器与探测器 · 物理学 2016-01-11 Elysée Obame Ndong , Olivier Gallot-Lavallée , Frédéric Aitken