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Fractional calculus represents a natural tool for describing relativistic phenomena in pseudo-Euclidean space-time. In this study, Fractional modified special relativity is presented. We obtain fractional generalized relation for the time…

综合物理 · 物理学 2011-09-06 Hosein Nasrolahpour

This is a first version of a paper concerning abstract evolution equation with fractional time derivatives. Maximal regularity results in spaces of continuous and Hoelder continuous functions are described.

偏微分方程分析 · 数学 2017-07-10 Davide Guidetti

It is shown that fractal dimension can be estimated seeking a solution of functional equation defined for areas of coverages of different scales. The method proposed is compared with widely known way to estimate fractal dimension via linear…

混沌动力学 · 物理学 2021-03-16 Dmitry Zhabin

We prove that any given function can be smoothly approximated by functions lying in the kernel of a linear operator involving at least one fractional component. The setting in which we work is very general, since it takes into account…

偏微分方程分析 · 数学 2018-10-22 Alessandro Carbotti , Serena Dipierro , Enrico Valdinoci

It is well known that in quantum gravity, the very geometry of space and time is subject to continual fluctuation. The mathematical formulation for this old theory is still lacking. This article formulates this more than forty-year-old…

广义相对论与量子宇宙学 · 物理学 2024-09-27 Behzad Tajahmad

We study algorithmic problems on subsets of Euclidean space of low fractal dimension. These spaces are the subject of intensive study in various branches of mathematics, including geometry, topology, and measure theory. There are several…

数据结构与算法 · 计算机科学 2017-03-29 Anastasios Sidiropoulos , Vijay Sridhar

Fractals are measurable metric sets with non-integer Hausdorff dimensions. If electric and magnetic fields are defined on fractal and do not exist outside of fractal in Euclidean space, then we can use the fractional generalization of the…

高能物理 - 理论 · 物理学 2015-03-11 Vasily E. Tarasov

Though calculations based on density functional theory (DFT) are used remarkably widely in chemistry, physics, materials science, and biomolecular research and though the modern form of DFT has been studied for almost 60 years, some…

By fractional relativity we mean a theoretical framework to study physics with the dispersion relation $E^{\alpha}=m^{\alpha}c^{2\alpha}+p^{\alpha}c^{\alpha}$, which recovers special relativity at $\alpha=2$. One such framework is…

综合物理 · 物理学 2018-10-03 Tower Wang

The theory of physical dimensions and units in physics is outlined. This includes a discussion of the universal applicability and superiority of quantity equations. The International System of Units (SI) is one example thereof. By analyzing…

广义相对论与量子宇宙学 · 物理学 2019-02-04 Friedrich W. Hehl , Claus Lämmerzahl

Fractional dynamics is a field of study in physics and mechanics investigating the behavior of objects and systems that are characterized by power-law non-locality, power-law long-term memory or fractal properties by using integrations and…

综合物理 · 物理学 2015-03-12 Vasily E. Tarasov

Data series generated by complex systems exhibit fluctuations on many time scales and/or broad distributions of the values. In both equilibrium and non-equilibrium situations, the natural fluctuations are often found to follow a scaling…

数据分析、统计与概率 · 物理学 2008-04-07 Jan W. Kantelhardt

Using kicked differential equations of motion with derivatives of noninteger orders, we obtain generalizations of the dissipative standard map. The main property of these generalized maps, which are called fractional maps, is long-term…

混沌动力学 · 物理学 2014-03-03 Vasily E. Tarasov , Mark Edelman

In quantum mechanics the time dimension is treated as a parameter, while the three space dimensions are treated as observables. This assumption is both untested and inconsistent with relativity. From dimensional analysis, we expect quantum…

量子物理 · 物理学 2019-05-27 John Ashmead

In thirties years of last century Dirac proposed to treat Schrodinger equation as the equation of diffusion with imaginary diffusion coefficient. In the frame of multifractal theory of time and space (in this model our the multifractal…

综合物理 · 物理学 2007-05-23 L. Ya. Kobelev

In this review, we present some fundamental classical and quantum phenomena in view of time fractional formalism. Time fractional formalism is a very useful tool in describing systems with memory and delay. We hope that this study can…

综合物理 · 物理学 2012-03-27 Hosein Nasrolahpour

The fractal cosmological model which accounts for observable fractal properties of the Universe's large-scale structure is constructed. In this framework these properties are consequences of the rotary symmetry of charged scalar meson…

宇宙学与河外天体物理 · 物理学 2012-12-03 I. K. Rozgacheva , A. A. Agapov

We investigate diffusion equations with time-fractional derivatives of space-dependent variable order. We examine the well-posedness issue and prove that the space-dependent variable order coefficient is uniquely determined among other…

偏微分方程分析 · 数学 2018-12-05 Yavar Kian , Eric Soccorsi , Masahiro Yamamoto

The variability of temporal (or spatial) fluctuations of any variable is represented in conventional statistical theory by the relative dispersion equal to the standard deviation divided by the mean . The Relative Dispersion decreases with…

chao-dyn · 物理学 2007-05-23 A. M. Selvam , Suvarna Fadnavis , S. U. Athale

This paper presents the Euler-Lagrange equations for fractional variational problems with multiple integrals. The fractional Noether-type theorem for conservative and nonconservative generalized physical systems is proved. Our approach uses…

最优化与控制 · 数学 2012-10-09 Agnieszka B. Malinowska