Results 81 to 90 of about 35,406 (311)

Fluctuation-dissipation theorem and fundamental photon commutation relations in lossy nanostructures using quasinormal modes

Physical Review Research, 2020
We provide theory and formal insight on the Green function quantization method for absorptive and dispersive spatial-inhomogeneous media in the context of dielectric media.
Sebastian Franke, Juanjuan Ren, Stephen Hughes, Marten Richter   +3 more
doaj   +1 more source

Thermal fluctuation field for current-induced domain wall motion

, 2010
Current-induced domain wall motion in magnetic nanowires is affected by thermal fluctuation. In order to account for this effect, the Landau-Lifshitz-Gilbert equation includes a thermal fluctuation field and literature often utilizes the fluctuation ...
A. P. Malozemoff, G. L. Ingold, G. Strang, Hyun-Woo Lee, Kyoung-Whan Kim, R. K. Pathria, V. Kamberský, V. W. Döring   +7 more
core   +1 more source

Rethinking Climate Change on the Role of Human Power Generation, Alternative Perspectives, Potential Solutions, and a Plea for Action

Chemie Ingenieur Technik, EarlyView.
All energy matters Let us broaden the discussion on solutions to climate change. Greenhouse gases have upset the delicate equilibrium of the Earth's energy balance. Consequently, all sources of heat affect the temperature of the Earth. Although the amount of additional heat generated by humans is a fraction of that produced by the sun, it is generated ...
Martin Bertau, Gerald Steiner, Tom Harwood   +2 more
wiley   +1 more source

Nested Selves: Self‐Organization and Shared Markov Blankets in Prenatal Development in Humans

Topics in Cognitive Science, EarlyView., 2023
Abstract The immune system is a central component of organismic function in humans. This paper addresses self‐organization of biological systems in relation to—and nested within—other biological systems in pregnancy. Pregnancy constitutes a fundamental state for human embodiment and a key step in the evolution and conservation of our species. While not
Anna Ciaunica, Michael Levin, Fernando E. Rosas, Karl Friston   +3 more
wiley   +1 more source

Fluctuation-Dissipation relations far from Equilibrium

, 2007
In this Article we review some recent progresses in the field of non-equilibrium linear response theory. We show how a generalization of the fluctuation-dissipation theorem can be derived for Markov processes, and discuss the Cugliandolo-Kurchan \cite ...
Barabási A-L, Barrat J L, Bouchaud J P, Chamon C, Chatelain C, Crisanti A, Cugliandolo L F, Cugliandolo L F, Cugliandolo L F, Diezeman G, Eugenio Lippiello, Federico Corberi, Fisher D S Le Doussal P Monthus C, Furukawa H, Godrèche C, Kubo R, Kurchan J, Marco Zannetti, Mézard M, Newman C M   +19 more
core   +1 more source

Agent‐Based Computational Modeling of the Stochastic Dynamic Behavior of Actin Filaments Recapitulates the Homeostatic Cortical Array in Plant Epidermal Cells

Cytoskeleton, EarlyView.
ABSTRACT The homeostatic cortical actin array in plant cells plays important roles in fundamental processes, including intracellular transport, secretion, cell expansion, and cytoplasmic streaming. In response to diverse chemical and mechanical signals, the cortical array can remodel within minutes to assume new configurations or altered filament ...
June Hyung Kim, Weiwei Zhang, Anjali Iyer‐Pascuzzi, Christopher J. Staiger, Taeyoon Kim   +4 more
wiley   +1 more source

Effective temperatures of a heated Brownian particle

, 2011
We investigate various possible definitions of an effective temperature for a particularly simple nonequilibrium stationary system, namely a heated Brownian particle suspended in a fluid.
J.-L. Barrat, Kubo R., L. Joly, S. Merabia, Schweizer F., Seifert U., Speck T., Villamaina D., Zamponi F.   +8 more
core   +3 more sources

KMO-Langevin Equation and Fluctuation-Dissipation Theorem (I) [PDF]

Hokkaido Mathematical Journal, 1986
Let R be any fixed correlation function and A a differentiable stationary curve in a Hilbert space with R as its covariance function. A holomorphic function [R] is defined on \(C^+\) by \[ [R](\xi)=\frac{1}{2\pi}\int^{\infty}_{0}e^{i\xi t}R(t)dt. \] In the first half of the paper the author has obtained a complete structure of the function [R] by ...
openaire   +5 more sources

Self‐Similar Blowup for the Cubic Schrödinger Equation

Communications on Pure and Applied Mathematics, EarlyView.
ABSTRACT We give a rigorous proof for the existence of a finite‐energy, self‐similar solution to the focusing cubic Schrödinger equation in three spatial dimensions. The proof is computer‐assisted and relies on a fixed point argument that shows the existence of a solution in the vicinity of a numerically constructed approximation.
Roland Donninger, Birgit Schörkhuber
wiley   +1 more source

Nonequilibrium Brownian motion beyond the effective temperature.

PLoS ONE, 2014
The condition of thermal equilibrium simplifies the theoretical treatment of fluctuations as found in the celebrated Einstein's relation between mobility and diffusivity for Brownian motion.
Andrea Gnoli, Andrea Puglisi, Alessandro Sarracino, Angelo Vulpiani   +3 more
doaj   +1 more source