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We study fluctuations of particle number in the presence of critical point by utilizing molecular dynamics simulations of the classical Lennard-Jones fluid in a periodic box. The numerical solution of the $N$-body problem naturally…

高能物理 - 唯象学 · 物理学 2022-04-27 Volodymyr A. Kuznietsov , Oleh Savchuk , Mark I. Gorenstein , Volker Koch , Volodymyr Vovchenko

The study of correlations between brain regions is an important chapter of the analysis of large-scale brain spatiotemporal dynamics. In particular, novel methods suited to extract dynamic changes in mutual correlations are needed. Here we…

神经元与认知 · 定量生物学 2018-10-11 Jeremi K. Ochab , Wojciech Tarnowski , and Maciej A. Nowak , Dante R. Chialvo

The report presents an exhaustive review of the recent attempt to overcome the difficulties that standard quantum mechanics meets in accounting for the measurement (or macro-objectification) problem, an attempt based on the consideration of…

量子物理 · 物理学 2009-11-10 Angelo Bassi , GianCarlo Ghirardi

We show that claims, presented in Phys. Rev. B {\bf 65}, 125109 (2002) concerning the threshold behavior of dynamical correlations of a Coulomb Luttinger liquid, are based on an inconsistent mathematical analysis. Physical arguments are…

强关联电子 · 物理学 2009-11-07 D. W. Wang , A. J. Millis , S. Das Sarma

A zonal similarity analysis of friction factors in pipe flow of power law fluids is presented. It uses the critical Reynolds number and friction factor at transition as estimates of the normalised velocity and distance between the wall and…

流体动力学 · 物理学 2010-07-16 Khanh Tuoc Trinh

We investigate the quantum theory of closed systems based on the linear positivity decoherence condition of Goldstein and Page. A quantum theory of closed systems requires two elements; 1) a condition specifying which sets of histories may…

量子物理 · 物理学 2009-11-10 James B. Hartle

Current theories from biosocial (e.g.: the role of neurotransmitters in behavioral features), ecological (e.g.: cultural, political, and institutional conditions), and interpersonal (e.g.: attachment) perspectives have grounded…

物理与社会 · 物理学 2009-11-03 Alhaji Cherif , Kamal Barley

We follow and modify the Feshbach-Villars formalism by separating the Klein-Gordon equation into two coupled time-dependent Schroedinger equations for particle and antiparticle wave function components with positive probability densities.…

高能物理 - 唯象学 · 物理学 2011-08-04 Cheuk-Yin Wong

We review in details some recently proposed kinetic models of opinion dynamics. We discuss the several variants including a generalised model. We provide mean field estimates for the critical points, which are numerically supported with…

物理与社会 · 物理学 2015-03-17 Soumyajyoti Biswas , Anjan Kumar Chandra , Arnab Chatterjee , Bikas K. Chakrabarti

We present a careful analysis of possible issues on the application of the self-excited Hawkes process to high-frequency financial data. We carefully analyze a set of effects leading to significant biases in the estimation of the…

统计金融 · 定量金融 2014-07-04 Vladimir Filimonov , Didier Sornette

This is a short survey on recent results obtained by the authors on dynamical phase transitions of interacting particle systems. We consider particle systems with exclusion dynamics, but it is conjectured that our results should hold for a…

概率论 · 数学 2013-10-22 Tertuliano Franco , Patrícia Gonçalves , Adriana Neumann

A simple model of the driven motion of interacting particles in a two dimensional random medium is analyzed, focusing on the critical behavior near to the threshold that separates a static phase from a flowing phase with a steady-state…

统计力学 · 物理学 2008-02-03 Joe Watson , Daniel S. Fisher

The notion of expansivity and its generalizations (measure expansive, measure positively expansive, continuum-wise expansive, countably-expansive) are well known for deterministic systems and can be a useful property for studying…

动力系统 · 数学 2024-10-15 Rafael A. Bilbao , Marlon Oliveira , Eduardo Santana

Philosophers now seem to agree that frequentism is an untenable strategy to explain the meaning of probabilities. Nevertheless, I want to revive frequentism, and I will do so by grounding probabilities on typicality in the same way as the…

物理学史与哲学 · 物理学 2021-01-05 Mario Hubert

For diffusive stochastic dynamics, the probability to observe any individual trajectory is vanishingly small, making it unclear how to experimentally validate theoretical results for ratios of path probabilities. We provide the missing link…

统计力学 · 物理学 2021-08-04 Jannes Gladrow , Ulrich F. Keyser , R. Adhikari , Julian Kappler

A review is presented of the fundamental equations of point, perfect incompressible fluid and wave dynamics in the Fantappie-Arcidiacono theory of projective relativity, also known as De Sitter relativity. Compared to the original works,…

综合物理 · 物理学 2009-01-26 Leonardo Chiatti

We consider fluctuations of the time-averaged current in the one-dimensional weakly-asymmetric exclusion process on a ring. The optimal density profile which sustains a given fluctuation exhibits an instability for low enough currents,…

统计力学 · 物理学 2013-10-29 Carlos P. Espigares , Pedro L. Garrido , Pablo I. Hurtado

We show that the mutual information between two symbols, as a function of the number of symbols between the two, decays exponentially in any probabilistic regular grammar, but can decay like a power law for a context-free grammar. This…

无序系统与神经网络 · 物理学 2017-08-25 Henry W. Lin , Max Tegmark

Finite Element simulations of rubbers and biological soft tissue usually assume that the material being deformed is slightly compressible. It is shown here that in shearing deformations the corresponding normal stress distribution can…

软凝聚态物质 · 物理学 2013-02-13 Michel Destrade , Michael D. Gilchrist , Julie Motherway , Jerry G. Murphy

We explore the relationship between linear and non-linear causality in theories of dissipative relativistic fluid dynamics. While for some fluid-dynamical theories, a linearized causality analysis can be used to determine whether the full…

高能物理 - 理论 · 物理学 2024-11-08 Raphael E. Hoult , Pavel Kovtun