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In the present article we describe how one can define Hausdorff measure allowing empty elements in coverings, and using infinite countable coverings only. In addition, we discuss how the use of different nonequivalent interpretations of the…

综合数学 · 数学 2017-10-24 Alexey A. Tuzhilin

In Refs. [1,2] we have shown how a combination of modern linear-scaling DFT, together with a subsequent use of large, effective tight-binding Hamiltonians, allows to compute multifractal wave functions yielding the critical properties of…

无序系统与神经网络 · 物理学 2019-02-27 Edoardo G. Carnio , Nicholas D. M. Hine , Rudolf A. Römer

In the canonical framework, we propose an alternative approach for the multifractal analysis based on the detrending moving average method (MF-DMA). We define a canonical measure such that the multifractal mass exponent $\tau(q)$ is related…

统计金融 · 定量金融 2019-02-13 Hai-Chuan Xu , Gao-Feng Gu , Wei-Xing Zhou

The many-body problem is usually approached from one of two perspectives: the first originates from an action and is based on Feynman diagrams, the second is centered around a Hamiltonian and deals with quantum states and operators. The…

强关联电子 · 物理学 2021-10-15 Fabian B. Kugler , Seung-Sup B. Lee , Jan von Delft

There has been a trend in the past decade to describe the large-scale structures in the Universe as a (multi)fractal set. However, one of the main objections raised by the opponents of this approach deals with the transition to homogeneity.…

天体物理学 · 物理学 2016-08-30 F. M. Ramos , C. A. Wuensche , A. L. B. Ribeiro , R. R. Rosa

A novel method for constructing a nonlinear fractal histopolation function associated with a given histogram is introduced in this paper. In contrast to classical fractal interpolation methods, which produce continuous and interpolatory…

动力系统 · 数学 2025-09-26 Aiswarya T , Srijanani Anurag Prasad

We present a formalism to discern the effects of fluctuations of the spacetime metric on electromagnetic radiation. The formalism works via the measurement of electromagnetic field correlations, while allowing a clear assessment of the…

广义相对论与量子宇宙学 · 物理学 2024-04-09 B. Sharmila , Sander M. Vermeulen , Animesh Datta

Under mild conditions, it is possible to obtain, from almost purely measure-theoretic considerations and without any specific reference to stochastic processes, a change-of-measures result, resembling the usual Radon-Nikod\'ym change of…

概率论 · 数学 2020-06-15 Yu-Lin Chou

We study hyperbolic attractors of some dynamical systems with apriori given countable Markov partitions. Assuming that contraction is stronger than expansion we construct new Markov rectangles such that their crossections by unstable…

动力系统 · 数学 2018-03-07 Michael Jakobson , Lucia D. Simonelli

In this article one introduces a formalism of classical mechanics where complex Lagrangian functions are admitted. The results include complex versions of the Lagrangian function, of the Euler-Lagrange equation, of the Hamilton principle, a…

数学物理 · 物理学 2026-02-03 Sergio Giardino

In this paper, we determine the almost sure multifractal spectrum of a class of random functions constructed as sums of pulses with random dilations and translations. In addition, the continuity modulii of these functions is investigated.

经典分析与常微分方程 · 数学 2021-11-23 Guillaume Saes , Stéphane Seuret

The purpose of the present paper is to set up a formalism inspired from non-Archimedean geometry to study K-stability. We first provide a detailed analysis of Duistermaat-Heckman measures in the context of test configurations,…

代数几何 · 数学 2016-12-01 Sébastien Boucksom , Tomoyuki Hisamoto , Mattias Jonsson

It is demonstrated that nonlinear dynamical systems with analytic nonlinearities can be brought down to the abstract Schr\"odinger equation in Hilbert space with boson Hamiltonian. The Fourier coefficients of the expansion of solutions to…

solv-int · 物理学 2009-10-31 Krzysztof Kowalski

This paper deals with the famous isoperimetric inequality. In a first part, we give some new functional form of the isoperimetric inequality, and in a second part, we give a quantitative form with a remainder term involving Wasserstein…

泛函分析 · 数学 2017-01-04 Erik Thomas

Most classical mechanical systems are based on dynamical variables whose values are real numbers. Energy conservation is then guaranteed if the dynamical equations are phrased in terms of a Hamiltonian function, which then leads to…

数学物理 · 物理学 2013-12-05 Gerard 't Hooft

We have recently presented an extension of the standard variational calculus to include the presence of deformed derivatives in the Lagrangian of a system of particles and in the Lagrangian density of field-theoretic models. Classical…

数学物理 · 物理学 2017-06-30 J. Weberszpil , J. A. Helayël-Neto

In this work we investigate the long-time behavior, that is the existence and characterization of invariant measures as well as convergence of transition probabilities, for Markov processes obtained as the unique mild solution to stochastic…

概率论 · 数学 2022-03-17 Balint Fárkas , Martin Friesen , Barbara Rüdiger , Dennis Schroers

The biorthogonal formalism extends conventional quantum mechanics to the non-Hermitian realm. It has, however, been pointed out that the biorthogonal inner product changes with the scaling of the eigenvectors, an ambiguity whose physical…

量子物理 · 物理学 2023-04-24 Elisabet Edvardsson , J Lukas K König , Marcus Stålhammar

We develop a classical theoretical description for nonlinear many-body dynamics that incorporates the back-action of a continuous measurement process. The classical approach is compared with the exact quantum solution in an example with an…

量子气体 · 物理学 2013-01-04 Juha Javanainen , Janne Ruostekoski

We prove the existence of an ergodic measure with full Hausdorff dimension for a class of nonlinear nonconformal skew-product transformations. In order to do so we establish a variational principle for the topological pressure of certain…

动力系统 · 数学 2007-05-25 Nuno Luzia