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In this letter we have analyzed the temporal correlations of the angle-of-arrival fluctuations of stellar images. Experimentally measured data were carefully examined by implementing multifractal detrended fluctuation analysis. This…

大气与海洋物理 · 物理学 2023-07-19 Luciano Zunino , Damián Gulich , Gustavo Funes , Aziz Ziad

We develop a highly efficient method to numerically simulate thermal fluctuations and correlations in non-relativistic continuous bosonic one-dimensional systems. The method is suitable for arbitrary local interactions as long as the system…

量子气体 · 物理学 2020-04-21 Stefan Beck , Igor E. Mazets , Thomas Schweigler

A conditional diffusion model has been developed to analyze intricate conductance fluctuations called universal conductance fluctuations or quantum fingerprints appearing in quantum transport phenomena. The model reconstructs impurity…

介观与纳米尺度物理 · 物理学 2025-06-11 Naoto Yokoi , Yuki Tanaka , Yukito Nonaka , Shunsuke Daimon , Junji Haruyama , Eiji Saitoh

In this paper we develop a time reversal method for the radiative transport equation to solve two problems: an inverse problem for the recovery of an initial condition from boundary measurements, and the exact boundary controllability of…

偏微分方程分析 · 数学 2013-08-06 Sebastian Acosta

Thermodynamics is usually formulated on the presumption that the observer has complete information about the system he/she deals with: no parasitic current, exact evaluation of the forces that drive the system. For example, the acclaimed…

统计力学 · 物理学 2017-12-15 Matteo Polettini , Massimiliano Esposito

This paper considers a distributed wave-based sensing system that probes a scene consisting of multiple interacting idealized targets. Each sensor is a collocated transmit-receive pair that is capable of transmitting arbitrary wideband…

光学 · 物理学 2015-10-27 Jerry Kim , Margaret Cheney , Eric Mokole

The task of obfuscating writing style using sequence models has previously been investigated under the framework of obfuscation-by-transfer, where the input text is explicitly rewritten in another style. These approaches also often lead to…

计算与语言 · 计算机科学 2018-05-21 Chris Emmery , Enrique Manjavacas , Grzegorz Chrupała

We investigate quantum correlations in time in different approaches. We assume that temporal correlations should be treated in an even-handed manner with spatial correlations. We compare the pseudo-density matrix formalism with several…

量子物理 · 物理学 2020-12-23 Tian Zhang , Oscar Dahlsten , Vlatko Vedral

Out-of-time-order correlation (OTOC) functions provide a powerful theoretical tool for diagnosing chaos and the scrambling of information in strongly-interacting, quantum systems. However, their direct and unambiguous experimental…

量子物理 · 物理学 2019-01-16 Beni Yoshida , Norman Y. Yao

This paper considers the motion of an object subjected to dry friction and an external random force. The objective is to characterize the role of the correlation time of the external random force. We develop efficient stochastic simulation…

统计力学 · 物理学 2023-09-26 Josselin Garnier , Laurent Mertz

A new formalism will be presented in order to study real time evolution of quantum systems at finite temperature. Probability distributions for time-correlated observables will be studied non-perturbatively and fully quantized. This works…

高能物理 - 格点 · 物理学 2009-10-30 E. Mendel , M. Nest

Recent differentiable rendering techniques have become key tools to tackle many inverse problems in graphics and vision. Existing models, however, assume steady-state light transport, i.e., infinite speed of light. While this is a safe…

图形学 · 计算机科学 2022-06-14 Shinyoung Yi , Donggun Kim , Kiseok Choi , Adrian Jarabo , Diego Gutierrez , Min H. Kim

Dynamical systems describe how a physical system evolves over time. Physical processes can evolve faster or slower in different environmental conditions. We use time-warping as rescaling the time in a model of a physical system. This thesis…

机器学习 · 计算机科学 2026-05-12 Jonathon Hirschi

We present technical results required for the description and understanding of correlations and fluctuations of the empirical density and current as well as diverse time-integrated and time-averaged thermodynamic currents of diffusion…

统计力学 · 物理学 2023-01-09 Cai Dieball , Aljaž Godec

Motivated by previous work on kinetic energy cascades in the ocean and atmosphere, we develop a spatio-temporal spectral transfer tool that can be used to study scales of variability in generalized dynamical systems. In particular, we use…

流体动力学 · 物理学 2025-05-23 Avik Mondal , Andrew J. Morten , Brian K. Arbic , Glenn R. Flierl , Robert B. Scott , Joseph Skitka

This study introduces a novel method to investigate in-situ light transport within optically thick ensembles of cold atoms, exploiting the internal structure of alkaline-earth metals. A method for creating an optical excitation at the…

I present a way to visualize the concept of curved spacetime. The result is a curved surface with local coordinate systems (Minkowski Systems) living on it, giving the local directions of space and time. Relative to these systems, special…

广义相对论与量子宇宙学 · 物理学 2008-11-26 Rickard Jonsson

This work presents an efficient numerical method based on spectral expansions for simulation of heat and moisture diffusive transfers through multilayered porous materials. Traditionally, by using the finite-difference approach, the problem…

计算工程、金融与科学 · 计算机科学 2020-02-20 Suelen Gasparin , Denys Dutykh , Nathan Mendes

Atmospheric processes involve both space and time. This is why human analysis of atmospheric imagery can often extract more information from animated loops of image sequences than from individual images. Automating such an analysis requires…

计算机视觉与模式识别 · 计算机科学 2022-10-26 Akansha Singh Bansal , Yoonjin Lee , Kyle Hilburn , Imme Ebert-Uphoff

The conventional discussion of apparent distortions of space and time in Special Relativity (the Lorentz-Fitzgerald Contraction and Time Dilatation) is extended by considering observations of : (i) moving objects of limited lifetime in…

科普物理 · 物理学 2009-10-01 J. H. Field