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Multifractal properties of the distribution of topological invariants for a model of trajectories randomly entangled with a nonsymmetric lattice of obstacles are investigated. Using the equivalence of the model to random walks on a locally…

统计力学 · 物理学 2009-10-31 R. Voituriez , S. Nechaev

There is ample evidence for magnetic reconnection in the solar system, but it is a nontrivial task to visualize, to determine the proper approaches and frames to study, and in turn to elucidate the physical processes at work in reconnection…

Minkowski functionals quantify the morphology of smooth random fields. They are widely used to probe statistical properties of cosmological fields. Analytic formulae for ensemble expectations of Minkowski functionals are well known for…

宇宙学与河外天体物理 · 物理学 2023-11-27 Pravabati Chingangbam , Fazlu Rahman

In this literature, we carefully investigate the structure of single- and multi-frequency imaging functions, that are usually employed in inverse scattering problems. Based on patterns of the singular vectors of the Multi-Static Response…

数学物理 · 物理学 2013-04-04 Young Deuk Jo , Young Mi Kwon , Joo Young Huh , Won-Kwang Park

Rotation measure synthesis allows the estimation of Faraday dispersion via a Fourier transform and is the primary tool to probe cosmic magnetic fields. We show this can be considered mathematically equivalent to the one dimensional…

天体物理仪器与方法 · 物理学 2020-05-13 Luke Pratley , Melanie Johnston-Hollitt

We review three different approaches for the calculation of electromagnetic multipoles, namely the Cartesian primitive multipoles, the Cartesian irreducible multipoles and the spherical multipoles. We identify the latter as the best suited…

光学 · 物理学 2022-09-23 Marco Riccardi , Andrei Kiselev , Karim Achouri , Olivier J. F. Martin

We present a new method for dealing with geometrical selection effects in galaxy surveys while using a multifractal framework. The power of multifractal analysis lies in its connection to higher order moments, in that it not only probes…

天体物理学 · 物理学 2010-11-11 Cristiano Sabiu , Luis Teodoro , Martin Hendry

Single-particle properties at superdeformation are investigated within the Cranked Relativistic Mean Field (CRMF) theory on the example of superdeformed rotational bands observed in the A~140-150 mass region. Applying the effective…

核理论 · 物理学 2009-10-31 A. V. Afanasjev , G. A. Lalazissis , P. Ring

For a static time slice of AdS$_3$ we describe a particular class of minimal surfaces which form trivalent networks of geodesics. Through geometric arguments we provide evidence that these surfaces describe a measure of multipartite…

高能物理 - 理论 · 物理学 2024-05-15 Jonathan Harper , Tadashi Takayanagi , Takashi Tsuda

We provide an analytical formulation to model the propagation of elastic waves in a homogeneous half-space supporting an array of thin plates. The technique provides the displacement field obtained from the interaction between an incident…

应用物理 · 物理学 2022-06-02 Xingbo Pu , Antonio Palermo , Alessandro Marzani

Magnetic fields are of critical importance for our understanding of the origin and long-term evolution of the Milky Way. This is due to their decisive role in the dynamical evolution of the interstellar medium (ISM) and their influence on…

We compute the exact partition function on the branched two-sphere by the localization technique. It is found that it does not depend on a branching parameter q, which means that supersymmetric R\'enyi entropy defined by utilizing it is…

高能物理 - 理论 · 物理学 2016-03-17 Hironori Mori

The probability density functions measured by Lewis and Swinney for turbulent Couette-Taylor flow, observed by Bodenschatz and co-workers in the Lagrangian measurement of particle accelerations and those obtained in the DNS by Gotoh et al.…

软凝聚态物质 · 物理学 2007-05-23 Toshihico Arimitsu , Naoko Arimitsu

We extend a previous analysis of spatial correlation functions for classical electromagnetic vector fields near a perfectly conducting boundary [PRE, vol. 73, 036604 (2006)] to the case of an isotropic semi-infinite medium with planar…

光学 · 物理学 2009-11-13 Luk R. Arnaut

We consider the set of monofractals within a multifractal related to the phase space being the support of a generalized thermostatistics. The statistical weight exponent $\tau(q)$ is shown to can be modeled by the hyperbolic tangent…

统计力学 · 物理学 2007-05-23 A. I. Olemskoi , V. O. Kharchenko

The fundamental functional summary statistics used for studying spatial point patterns are developed for marked homogeneous and inhomogeneous point processes on the surface of a sphere. These are extended to point processes on the surface…

统计方法学 · 统计学 2024-10-03 Scott Ward , Edward A. K. Cohen , Niall M. Adams

Faraday tomography, the study of the distribution of extended polarized emission by strength of Faraday rotation, is a powerful tool for studying magnetic fields in the interstellar medium of our Galaxy and nearby galaxies. The strong…

星系天体物理 · 物理学 2018-10-24 Cameron L. Van Eck

Multiscale phenomena which include several processes occuring simultaneously at different length scales and exchanging energy with each other, are widespread in magnetism. These phenomena often govern the magnetization reversal dynamics,…

材料科学 · 物理学 2009-10-31 V. V. Dobrovitski , M. I. Katsnelson , B. N. Harmon

Random fields play a central role in the analysis of spatially correlated data and, as a result, have a significant impact on a broad array of scientific applications. This paper studies the cepstral random field model, providing recursive…

统计理论 · 数学 2014-01-17 Tucker S. McElroy , Scott H. Holan

The coupling space of perceptrons with continuous as well as with binary weights gets partitioned into a disordered multifractal by a set of $p=\gamma N$ random input patterns. The multifractal spectrum $f(\alpha)$ can be calculated…

无序系统与神经网络 · 物理学 2009-10-28 M. Weigt , A. Engel