Results 1 to 10 of about 24,017 (119)

Variable-moment fluid closures with Hamiltonian structure [PDF]

open access: yesScientific Reports, 2023
Based on ideas due to Scovel–Weinstein, I present a general framework for constructing fluid moment closures of the Vlasov–Poisson system that exactly preserve that system’s Hamiltonian structure. Notably, the technique applies in any space dimension and
J. W. Burby
doaj   +2 more sources

Active Disturbance Rejection Robust Hamiltonian Tracking Control of Electrically Driven Manipulator [PDF]

open access: yesZhengzhou Daxue xuebao. Gongxue ban, 2022
Aiming to solve the position tracking problem of permanent magnet synchronous motor driven manipulator system,a robust control strategy combining active disturbance rejection control and Hamiltonian control was proposed.Firstly,the electrical subsystem
ZENG Qingshan   +3 more
doaj   +1 more source

A rigorous derivation of the Hamiltonian structure for the Vlasov equation

open access: yesForum of Mathematics, Sigma, 2023
We consider the Vlasov equation in any spatial dimension, which has long been known [ZI76, Mor80, Gib81, MW82] to be an infinite-dimensional Hamiltonian system whose bracket structure is of Lie–Poisson type.
Joseph K. Miller   +4 more
doaj   +1 more source

Assessment of various Hamiltonian partitionings for the electronic structure problem on a quantum computer using the Trotter approximation [PDF]

open access: yesQuantum, 2023
Solving the electronic structure problem via unitary evolution of the electronic Hamiltonian is one of the promising applications of digital quantum computers.
Luis A. Martínez-Martínez   +2 more
doaj   +1 more source

Intractability of Electronic Structure in a Fixed Basis

open access: yesPRX Quantum, 2022
Finding the ground-state energy of electrons subject to an external electric field is a fundamental problem in computational chemistry. While the theory of QMA-completeness has been instrumental in understanding the complexity of finding ground states in
Bryan O’Gorman   +3 more
doaj   +1 more source

Hamiltonian Modeling and Structure Modified Control of Diesel Engine

open access: yesEnergies, 2021
A diesel engine is a typical dynamic system. In this paper, a dynamics method is proposed to establish the Hamiltonian model of the diesel engine, which solves the main difficulty of constructing a Hamiltonian function under the multi-field coupling ...
Jing Qian   +3 more
doaj   +1 more source

Finding symmetries for the problem of water waves with surface tension

open access: yesДифференциальная геометрия многообразий фигур, 2022
T. Brooke Benjamin and P. J. Olver “Hamiltonian structure, symmet­ries and conservation laws for water waves” study the behavior of Hamil­to­nian systems with an infinite-dimensional phase space.
E.R. Shamardina
doaj   +1 more source

Hamiltonian of a flux qubit-LC oscillator circuit in the deep–strong-coupling regime

open access: yesScientific Reports, 2022
We derive the Hamiltonian of a superconducting circuit that comprises a single-Josephson-junction flux qubit inductively coupled to an LC oscillator, and we compare the derived circuit Hamiltonian with the quantum Rabi Hamiltonian, which describes a two ...
F. Yoshihara   +4 more
doaj   +1 more source

Einstein Field Equation, Recursion Operators, Noether and Master Symmetries in Conformable Poisson Manifolds

open access: yesUniverse, 2022
We show that a Minkowski phase space endowed with a bracket relatively to a conformable differential realizes a Poisson algebra, confering a bi-Hamiltonian structure to the resulting manifold.
Mahouton Norbert Hounkonnou   +2 more
doaj   +1 more source

A Study of Nuclear Structure of (Mo^96,98) by Using Interacting Boson Model-1

open access: yesTikrit Journal of Pure Science, 2023
In this study, the interacting Boson Model (IBM-1) was used to find the best Hamiltonian structure for studying the (Mo^96,98)  structure. For generating the Hamiltonian structure, the calculated energy levels (ground, beta, and gamma bands) and B(E2 ...
Berun Nasralddin Ghafoor
doaj   +1 more source

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