Results 51 to 60 of about 35,406 (311)

Local fluctuation dissipation relation

, 2002
In this letter I show that the recently proposed local version of the fluctuation dissipation relations follows from the general principle of stochastic stability in a way that is very similar to the usual proof of the fluctuation dissipation theorem for
Parisi, Giorgio
core   +1 more source

Fluctuation-dissipation theorem and quantum tunneling with dissipation at finite temperature [PDF]

, 1998
A reformulation of the fluctuation-dissipation theorem of Callen and Welton is presented in such a manner that the basic idea of Feynman-Vernon and Caldeira -Leggett of using an infinite number of oscillators to simulate the dissipative medium is ...
A. Einstein, A. J. Bray, A. O. Caldeira, A. O. Caldeira, F. Gliozzi, G. Shoen, H. B. Callen, H. Nakano, H. Nyquist, H. Takahasi, J. Wess, K. Fujikawa, K. Fujikawa, K. Fujikawa, L. Onsager, L. Onsager, P. C. Martin, R. Kubo, R. M. Wald, R. P. Feynman, S. Chakravarty, S. Takagi   +21 more
core   +2 more sources

Waveguide Photoactuators: Materials, Fabrication, and Applications

Advanced Robotics Research, EarlyView.
Waveguide photoactuators convert guided light into mechanical motion. Their tethered‐flexible design enables minimally invasive surgery and confined‐space robotics. This review aims to guide materials selection, device design, and system integration, accelerating the transition of waveguide photoactuators from laboratory prototypes to versatile ...
Minjie Xi, Hemin Pan, Yang Zong, Yongfeng Mei, Jizhai Cui   +4 more
wiley   +1 more source

Experiments in Stochastic Thermodynamics: Short History and Perspectives

Physical Review X, 2017
We summarize in this article the experiments which have been performed to test the theoretical findings in stochastic thermodynamics such as fluctuation theorem, Jarzynski equality, stochastic entropy, out-of-equilibrium fluctuation dissipation theorem ...
S. Ciliberto
doaj   +1 more source

Fluctuation Theorem for Partially-masked Nonequilibrium Dynamics

, 2014
We establish a novel generalization of the fluctuation theorem for partially-masked nonequilibrium dynamics. We introduce a partial entropy production with a subset of all possible transitions, and show that the partial entropy production satisfies the ...
Sagawa, Takahiro, Shiraishi, Naoto
core   +1 more source

Fluctuation-dissipation theorem for the microcanonical ensemble [PDF]

Physical Review E, 2008
A derivation of the Fluctuation-Dissipation Theorem for the microcanonical ensemble is presented using linear response theory. The theorem is stated as a relation between the frequency spectra of the symmetric correlation and response functions.
openaire   +4 more sources

Linearizing and Forecasting: A Reservoir Computing Route to Digital Twins of the Brain

Advanced Science, EarlyView.
A new approach uses simple neural networks to create digital twins of brain activity, capturing how different patterns unfold over time. The method generates and recovers key dynamics even from noisy data. When applied to fMRI, it predicts brain signals and reveals distinctive activity patterns across regions and individuals, opening possibilities for ...
Gabriele Di Antonio, Tommaso Gili, Andrea Gabrielli, Maurizio Mattia   +3 more
wiley   +1 more source

Sub‐Unit‐Cell Logic Governs Transport in TPMS Architectures

Advanced Science, EarlyView.
ABSTRACT Next‐generation energy, thermal, and chemical systems require architectures capable of highly efficient transport across multiple length scales. Triply periodic minimal surfaces (TPMS), first conceptualized in 1865, offer inherently scalable geometries with exceptional transport potential, yet mechanistic links between topology and performance
Haozhang Zhong, Yipei He, Jiaxuan Wang, Chenyi Qian, Gerd E Schröder‐Turk, Raj Das, Junye Shi, Qi Tang, Zheda Ning, Wenjue Yi, Chuanwei Li, Jiangping Chen, Zeyao Chen, Binbin Yu, Jian LU, Jianfeng Gu, Ma Qian   +16 more
wiley   +1 more source

Probing vacuum field fluctuations and source radiation separately in space and time

Physical Review Research, 2023
Source radiation (radiation reaction) and vacuum field fluctuations can be seen as two inseparable contributions to processes such as spontaneous emission, the Lamb shift, or the Casimir force.
Frieder Lindel, Alexa Marina Herter, Jérôme Faist, Stefan Yoshi Buhmann   +3 more
doaj   +1 more source

Theory of Non-Equilibrium Heat Transport in Anharmonic Multiprobe Systems at High Temperatures

Entropy, 2021
We consider the problem of heat transport by vibrational modes between Langevin thermostats connected by a central device. The latter is anharmonic and can be subject to large temperature difference and thus be out of equilibrium.
Keivan Esfarjani
doaj   +1 more source