Results 11 to 20 of about 960,683 (280)

Likelihood equations and scattering amplitudes [PDF]

open access: yesAlgebraic Statistics, 2021
We relate scattering amplitudes in particle physics to maximum likelihood estimation for discrete models in algebraic statistics. The scattering potential plays the role of the log-likelihood function, and its critical points are solutions to rational function equations.
Sturmfels, B., Telen, S.
openaire   +3 more sources

Scattering equations and string theory amplitudes [PDF]

open access: yesPhysical Review D, 2014
v2: 18 pp, 1 figure, added clarifications and comments.
Bjerrum-Bohr, N. Emil J.   +3 more
openaire   +3 more sources

Numerical study on diverging probability density function of flat-top solitons in an extended Korteweg-de Vries equation [PDF]

open access: yes, 2009
We consider an extended Korteweg-de Vries (eKdV) equation, the usual Korteweg-de Vries equation with inclusion of an additional cubic nonlinearity. We investigate the statistical behaviour of flat-top solitary waves described by an eKdV equation in the ...
Ablowitz M   +8 more
core   +1 more source

Amplitude Equations and Chemical Reaction–Diffusion Systems [PDF]

open access: yesInternational Journal of Bifurcation and Chaos, 1997
The paper discusses the use of amplitude equations to describe the spatio-temporal dynamics of a chemical reaction–diffusion system based on an Oregonator model of the Belousov–Zhabotinsky reaction. Sufficiently close to a supercritical Hopf bifurcation the reaction–diffusion equation can be approximated by a complex Ginzburg–Landau equation with ...
Ipsen, M.   +2 more
openaire   +3 more sources

Solitonic interactions for Rossby waves with the influence of Coriolis parameters

open access: yesResults in Physics, 2021
In the current study, the Rossby waves envelope near the equator is studied starting from a potential vorticity equation with the horizontal component of Coriolis parameter.
XiaoJun Yin   +3 more
doaj   +1 more source

Nonequilibrium corrections to energy spectra of massive particles in expanding universe [PDF]

open access: yes, 1996
Deviations from kinetic equilibrium of massive particles caused by the universe expansion are calculated analytically in the Boltzmann approximation. For the case of an energy independent amplitude of elastic scattering, an exact partial differential ...
A.D. Dolgov   +14 more
core   +2 more sources

The Korteweg-de Vries equation and water waves. Part 2. Comparison with experiments [PDF]

open access: yes, 1974
The Korteweg-de Vries (KdV) equation is tested experimentally as a model for moderate amplitude waves propagating in one direction in relatively shallow water of uniform depth. For a wide range of initial data, comparisons are made between the asymptotic
Hammack, Joseph L., Segur, Harvey
core   +1 more source

Four-phase patterns in forced oscillatory systems [PDF]

open access: yes, 2000
We investigate pattern formation in self-oscillating systems forced by an external periodic perturbation. Experimental observations and numerical studies of reaction-diffusion systems and an analysis of an amplitude equation are presented.
A. Ardelea   +30 more
core   +2 more sources

The spatial dynamics of a zebrafish model with cross-diffusions

open access: yesMathematical Biosciences and Engineering, 2017
This paper investigates the spatial dynamics of a zebrafish model with cross-diffusions. Sufficient conditions for Hopf bifurcation and Turing bifurcation are obtained by analyzing the associated characteristic equation.
Hongyong Zhao, Qianjin Zhang, Linhe Zhu
doaj   +1 more source

Amplitude equation for the generalized Swift–Hohenberg equation with noise [PDF]

open access: yesZeitschrift für angewandte Mathematik und Physik, 2013
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Klepel, Konrad   +2 more
openaire   +3 more sources

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