Results 31 to 40 of about 356 (98)

Anomalous Diffusion Models Involving Regularized General Fractional Derivatives with Sonin Kernels

open access: yesFractal and Fractional
In this paper, we introduce a general fractional master equation involving regularized general fractional derivatives with Sonin kernels, and we discuss its physical characteristics and mathematical properties. First, we show that this master equation can be embedded into the framework of continuous time random walks, and we derive an explicit formula ...
Maryam Alkandari   +2 more
openaire   +2 more sources

Fluctuations of power injection in randomly driven granular gases

open access: yes, 2005
We investigate the large deviation function pi(w) for the fluctuations of the power W(t)=w t, integrated over a time t, injected by a homogeneous random driving into a granular gas, in the infinite time limit.
Barrat, A.   +4 more
core   +3 more sources

Classical Strongly Coupled QGP: VII. Shear Viscosity and Self Diffusion

open access: yes, 2009
We construct the Liouville operator for the SU(2) classical colored Coulomb plasma (cQGP) for arbitrary values of the Coulomb coupling $\Gamma=V/K$, the ratio of the mean Coulomb to kinetic energy.
Ismail Zahed   +4 more
core   +1 more source

Searching for Sonin kernels

open access: yesFractional Calculus and Applied Analysis
AbstractThe causal shift-invariant convolution is studied from the point of view of inversion. Abel’s algorithm, used in the tautochrone problem, is considered and Sonin’s existence condition is deduced. To generate pairs of functions verifying Sonin’s condition, the class of Mittag-Leffler type functions is used.
openaire   +2 more sources

Polydispersity and optimal relaxation in the hard sphere fluid

open access: yes, 2013
We consider the mass heterogeneity in a gas of polydisperse hard particles as a key to optimizing a dynamical property: the kinetic relaxation rate. Using the framework of the Boltzmann equation, we study the long time approach of a perturbed velocity ...
Barbier, Matthieu, Trizac, Emmanuel
core   +2 more sources

Extending Sonine kernels to arbitrary dimensions

open access: yesBanach Journal of Mathematical Analysis
Abstract The theory of general fractional calculus with Sonine kernels has been well developed by Luchko in the one-dimensional case. Inspired by recent work on Mikusiński’s operational calculus for fractional partial differential operators, we construct a multi-dimensional version of the theory of Sonine kernels, solving a recognised open ...
openaire   +1 more source

Linear hydrodynamics for driven granular gases

open access: yes, 2012
We study the dynamics of a granular gas heated by the stochastic thermostat. From a Boltzmann description, we derive the hydrodynamic equations for small perturbations around the stationary state that is reached in the long time limit.
de Soria, M. I. Garcia   +2 more
core   +3 more sources

Des equations de Dirac et de Schrodinger pour la transformation de Fourier

open access: yes, 2003
Dyson a associe aux determinants de Fredholm des noyaux de Dirichlet pairs (resp. impairs) une equation de Schrodinger sur un demi-axe et a employe les methodes du scattering inverse de Gel'fand-Levitan et de Marchenko, en tandem, pour etudier l ...
Burnol   +14 more
core   +1 more source

Symmetrical Sonin kernels in terms of the hypergeometric functions

open access: yes, 2023
In this paper, we introduce a new class of the kernels of the integral transforms of the Laplace convolution type that we call symmetrical Sonin kernels. For a symmetrical Sonin kernel given in terms of some elementary or special functions, its associated kernel has the same form with possibly different parameter values.
openaire   +1 more source

Size distribution of particles in Saturn's rings from aggregation and fragmentation

open access: yes, 2015
Saturn's rings consist of a huge number of water ice particles, with a tiny addition of rocky material. They form a flat disk, as the result of an interplay of angular momentum conservation and the steady loss of energy in dissipative inter-particle ...
Bodrova, Anna   +6 more
core   +1 more source

Home - About - Disclaimer - Privacy