Results 31 to 40 of about 1,698,723 (379)

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

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

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

Spontaneous symmetry breaking and superposition of states in systems with dynamic chaos

open access: yesPhysics of Complex Systems, 2021
The article discusses one of the typical problems described by the equations of nonlinear dynamics—forced oscillations in a system with W-potential. It focuses, in particular, on chaotic oscillations in the presence of dissipation. In this case the state
Александр Викторович Ляпцев
doaj   +1 more source

The Pure State Space of Quantum Mechanics as Hermitian Symmetric Space [PDF]

open access: yes, 2002
The pure state space of Quantum Mechanics is investigated as Hermitian Symmetric Kaehler manifold. The classical principles of Quantum Mechanics (Quantum Superposition Principle, Heisenberg Uncertainty Principle, Quantum Probability Principle) and ...
A. Manià   +16 more
core   +2 more sources

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