Results 11 to 20 of about 5,943,505 (321)
Local variational principle [PDF]
Physical Review E, 2002 15 pages, 5 figures, one more section ...
A. Cuccoli +27 more
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Journal of the European Optical Society-Rapid Publications, 2023 The parameter dynamics of super-sech and super-Gaussian pulses for the perturbed nonlinear Schrödinger’s equation with power-law nonlinearity is obtained in this article. The variational principle successfully recovers this dynamical system.
Zayed Elsayed M.E. +10 more
doaj +2 more sources
An Optimal Control Problem of Forward-Backward Stochastic Volterra Integral Equations with State Constraints [PDF]
Abstract and Applied Analysis, 2014 This paper is devoted to the stochastic optimal control problems for systems governed by forward-backward stochastic Volterra integral equations (FBSVIEs, for short) with state constraints.
Qingmeng Wei, Xinling Xiao
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The Gouy-Stodola theorem as a variational principle for open systems [PDF]
Atti della Accademia Peloritana dei Pericolanti : Classe di Scienze Fisiche, Matematiche e Naturali, 2016 The variational method is very important in mathematical and theoretical physics because it allows us to describe the natural systems by physical quantities independently from the frame of reference.
Umberto Lucia
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The Maximum Caliber Variational Principle for Nonequilibria. [PDF]
Annu Rev Phys Chem, 2020 Ever since Clausius in 1865 and Boltzmann in 1877, the concepts of entropy and of its maximization have been the foundations for predicting how material equilibria derive from microscopic properties.
Ghosh K, Dixit PD, Agozzino L, Dill KA.
europepmc +2 more sources
Time-Dependent Variational Principle for Open Quantum Systems with Artificial Neural Networks. [PDF]
Physical Review Letters, 2021 We develop a variational approach to simulating the dynamics of open quantum many-body systems using deep autoregressive neural networks. The parameters of a compressed representation of a mixed quantum state are adapted dynamically according to the ...
M. Reh, M. Schmitt, M. Gärttner
semanticscholar +1 more source
Variational Principle for Optimal Quantum Controls in Quantum Metrology. [PDF]
Physical Review Letters, 2021 We develop a variational principle to determine the quantum controls and initial state that optimizes the quantum Fisher information, the quantity characterizing the precision in quantum metrology. When the set of available controls is limited, the exact
Jing Yang +4 more
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Time-dependent variational principle with ancillary Krylov subspace [PDF]
Physical review B, 2020 We propose an improved scheme to do the time dependent variational principle (TDVP) in finite matrix product states (MPS) for two-dimensional systems or one-dimensional systems with long range interactions.
Ming-Jay Yang, S. White
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A modified Li-He’s variational principle for plasma
International journal of numerical methods for heat & fluid flow, 2021 Purpose It is extremely difficult to establish a variational principle for plasma. Kalaawy obtained a variational principle by using the semi-inverse method in 2016, and Li and He suggested a modification in 2017.
Ji-Huan He
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Real-time gravitational replicas: formalism and a variational principle [PDF]
Journal of High Energy Physics, 2020 This work is the first step in a two-part investigation of real-time replica wormholes. Here we study the associated real-time gravitational path integral and construct the variational principle that will define its saddle-points.
Sean Colin-Ellerin +4 more
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