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The susceptibility of modern machine learning classifiers to adversarial examples has motivated theoretical results suggesting that these might be unavoidable. However, these results can be too general to be applicable to natural data…

机器学习 · 计算机科学 2024-05-28 Ambar Pal , Jeremias Sulam , René Vidal

It is often assumed that the only effect of the Ghirardi-Rimini-Weber (`GRW') dynamical collapse mechanism on the `tails' of the wavefunction (that is, the components of superpositions on which the collapse is \emph{not} centred) is to…

量子物理 · 物理学 2022-04-22 David Wallace

Responses to questions, comments and criticism of our recent paper "General Relativity Resolves.." are provided. It is emphasized that our model is entirely natural to describe the dynamics of an axially symmetric galaxy and that our…

天体物理学 · 物理学 2007-05-23 F. I. Cooperstock , S. Tieu

A number of well-known difficulties in physics resulted from merging the theory of relativity with the Compton-de Broglie wave mechanics. Two such problems were the failure of Dirac's relativistic wave equation to predict the correct…

综合物理 · 物理学 2015-06-26 Ezzat G. Bakhoum

The concept of wavefunction reduction should be introduced to standard quantum mechanics in any physical processes where effective reduction of wavefunction occurs, as well as in the measurement processes. When the overlap is negligible,…

量子物理 · 物理学 2007-05-23 WonYoung Hwang , Jeong-Young Ji , Jongbae Hong

We examine the response of a plane wave incident on a flat surface of a medium characterized by simultaneously negative electric and magnetic susceptibilities by solving Maxwell's equations explicitly and without making any assumptions on…

光学 · 物理学 2008-10-28 Antonia Chimonidou , E. C. G. Sudarshan

We generalize the particle-conserving dynamics method of de las Heras et al. [J. Phys. Condens. Matter: 28, 24404 (2016).] to binary mixtures and apply this to hard rods in one dimension. Considering the case of one species consisting of…

软凝聚态物质 · 物理学 2020-11-02 Thomas Schindler , René Wittmann , Joseph M. Brader

A recent argument, attributed to Masanes, is claimed to show that the assumption that quantum measurements have definite, objective outcomes, is incompatible with quantum predictions. In this work, a detailed examination of the argument…

量子物理 · 物理学 2021-03-30 Elias Okon

Ab\'ert-Weiss have shown that the Bernoulli shift s of a countably infinite group \Gamma is weakly contained in any free measure preserving action (mpa) b of \Gamma. We establish a strong version of this result, conjectured by Ioana, by…

动力系统 · 数学 2012-04-09 Robin D. Tucker-Drob

Generative molecular design has moved from proof-of-concept to real-world applicability, as marked by the surge in very recent papers reporting experimental validation. Key challenges in explainability and sample efficiency present…

生物大分子 · 定量生物学 2024-03-05 Jeff Guo , Philippe Schwaller

Grounded on the quantum measurement riddle, a general argument against the universal validity of the superposition principle was recently put forward by Bassi and Ghirardi. It is pointed out that this argument is valid only within the realm…

量子物理 · 物理学 2009-11-07 Bernard d'Espagnat

Characteristic length of mass density resolution in dynamical reduction models is calculated utilizing energy conservation law and viable cosmological model with decreasing energy density of vacuum (dark energy density). The value found, $…

量子物理 · 物理学 2011-11-10 S. V. Akkelin

In a recent note (arXiv:1012.5069), the investigation performed by the present authors on the evolution of density fluctuations in an accelerated universe including matter creation was criticized. The criticism is based on the fact that the…

宇宙学与河外天体物理 · 物理学 2010-12-30 Alain de Roany , J. A. de Freitas Pacheco

Mixing by incompressible flows is a ubiquitous yet incompletely understood phenomenon in fluid dynamics. While previous studies have focused on optimal mixing rates, the question of its genericity, i.e., whether mixing occurs for typical…

偏微分方程分析 · 数学 2025-06-10 Zeyu Jin , Ruo Li

Classification with rejection emerges as a learning paradigm which allows models to abstain from making predictions. The predominant approach is to alter the supervised learning pipeline by augmenting typical loss functions, letting model…

机器学习 · 统计学 2025-05-09 Alexander Soen , Hisham Husain , Philip Schulz , Vu Nguyen

The effective classical/quantum dynamics of a particle constrained on a closed line embedded in a higher dimensional configuration space is analyzed. By considering explicit examples it is shown how different reduction mechanisms produce…

高能物理 - 理论 · 物理学 2007-05-23 P. Maraner

We review the major achievements of the dynamical reduction program, showing why and how it provides a unified, consistent description of physical phenomena, from the microscopic quantum domain to the macroscopic classical one. We discuss…

量子物理 · 物理学 2008-11-26 A. Bassi

A class of loop diagrams in general relativity appears to have a behavior which would upset the utility of the energy expansion for quantum effects. We show through the study of specific diagrams that cancellations occur which restore the…

高能物理 - 理论 · 物理学 2014-11-18 J. F. Donoghue , T. Torma

Let $(X,d)$ be a compact metric space and $(X,\mathcal{A},\mu,T)$ a measure preserving dynamical system. Furthermore, given a real, positive function $\psi$, let $W(T, \psi)$ and $ R(T,\psi) $ respectively denote the shrinking target set…

动力系统 · 数学 2025-11-05 Yubin He , Bing Li , Sanju Velani

Data-driven models can accurately describe and predict the dynamical properties of glass-forming liquids from structural data. Accurate predictions, however, do not guarantee an understanding of the underlying physical phenomena and the key…

统计力学 · 物理学 2026-03-18 Anand Sharma , Chen Liu , Misaki Ozawa , Daniele Coslovich