Results 11 to 20 of about 1,578,444 (158)

Superposition Principle and Kirchhoff’s Integral Theorem

open access: yesUniverse, 2022
The need for modification of the Huygens–Fresnel superposition principle arises even in the description of the free fields of massive particles and, more extensively, in nonlinear field theories. A wide range of formulations and superposition schemes for
Mikhail I. Krivoruchenko
doaj   +1 more source

A superposition principle for the inhomogeneous continuity equation with Hellinger–Kantorovich-regular coefficients [PDF]

open access: yesCommunications in Partial Differential Equations, 2020
We study measure-valued solutions of the inhomogeneous continuity equation where the coefficients v and g are of low regularity. A new superposition principle is proven for positive measure solutions and coefficients for which the recently-introduced ...
K. Bredies, M. Carioni, Silvio Fanzon
semanticscholar   +1 more source

Superposition principle and composite solutions to coupled nonlinear Schrödinger equations [PDF]

open access: yesMathematical methods in the applied sciences, 2020
We show that the superposition principle applies to coupled nonlinear Schrödinger equations with cubic nonlinearity where exact solutions may be obtained as a linear combination of other exact solutions.
L. Al Sakkaf, U. Al Khawaja
semanticscholar   +1 more source

Rheological equations of concrete state and relaxation of stress

open access: yesStructural Mechanics of Engineering Constructions and Buildings, 2022
Some approaches to the derivation of rheological equations of the mechanical state of concrete are considered and the principle of superposition of fraction deformations is justified in a nonlinear statement.
Evgeny A. Larionov   +2 more
doaj   +1 more source

Quantum superposition of spacetimes obeys Einstein's equivalence principle [PDF]

open access: yesAVS Quantum Science, 2021
Flaminia Giacomini1, ∗ and Časlav Brukner2, 3 1Perimeter Institute for Theoretical Physics, 31 Caroline St. N, Waterloo, Ontario, N2L 2Y5, Canada 2Vienna Center for Quantum Science and Technology (VCQ), Faculty of Physics, University of Vienna ...
Flaminia Giacomini, Č. Brukner
semanticscholar   +1 more source

Phenomenographic analysis and comparison of students’ conceptual understanding of electric and magnetic fields and the principle of superposition

open access: yesPhysical Review Physics Education Research, 2021
There are studies of students’ understanding of the concept of the electric field, the magnetic field, and the use of the superposition principle that have contributed to the creation of both educational strategies and assessment tools.
Esmeralda Campos   +3 more
doaj   +1 more source

Entangled Qubit States and Linear Entropy in the Probability Representation of Quantum Mechanics

open access: yesEntropy, 2022
The superposition states of two qubits including entangled Bell states are considered in the probability representation of quantum mechanics. The superposition principle formulated in terms of the nonlinear addition rule of the state density matrices is ...
Vladimir N. Chernega   +2 more
doaj   +1 more source

A restricted superposition principle for (non-)linear Fokker–Planck–Kolmogorov equations on Hilbert spaces [PDF]

open access: yesJournal of evolution equations (Printed ed.), 2020
We prove a version of the Ambrosio–Figalli–Trevisan superposition principle for a restricted subclass of solutions to the Fokker–Planck–Kolmogorov equation that is valid on separable infinite-dimensional Hilbert spaces.
Martin Dieckmann
semanticscholar   +1 more source

Analytical scannable‐shaped beam pattern synthesis via superposition principle

open access: yesIET Microwaves, Antennas & Propagation, 2021
A shaped beam pattern (SBP) synthesis algorithm, which obtains the desired SBP in an analytical way, is proposed. The new algorithm describes the SBP with the weighted superposition of a set of pencil beam patterns (PBPs).
Shiwen Lei   +7 more
doaj   +1 more source

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