Results 31 to 40 of about 134,686 (230)
Geometry of quadrilateral nets: second Hamiltonian form
, 2008 Discrete Darboux-Manakov-Zakharov systems possess two distinct Hamiltonian forms. In the framework of discrete-differential geometry one Hamiltonian form appears in a geometry of circular net. In this paper a geometry of second form is identified.Comment:
Bazhanov +16 more
core +1 more source
Symmetry group analysis and invariant solutions of hydrodynamic-type systems
International Journal of Mathematics and Mathematical Sciences, 2004 We study point and higher symmetries of systems of the hydrodynamic type with and without an explicit dependence on t,x. We consider such systems which satisfy the existence conditions for an infinite-dimensional group of hydrodynamic symmetries which ...
M. B. Sheftel
doaj +1 more source
, 2004 An overview of Hamiltonian systems with noncanonical Poisson structures is given. Examples of bi-Hamiltonian ode's, pde's and lattice equations are presented. Numerical integrators using generating functions, Hamiltonian splitting, symplectic Runge-Kutta
Karasözen, B.
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High order three part split symplectic integrators: Efficient techniques for the long time simulation of the disordered discrete nonlinear Schroedinger equation [PDF]
, 2014 While symplectic integration methods based on operator splitting are well established in many branches of science, high order methods for Hamiltonian systems that split in more than two parts have not been studied in great detail.
Bodyfelt, J. D. +4 more
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Angewandte Chemie, EarlyView.Ultrafast broadband transient absorption spectroscopy and multireference excited‐state nonadiabatic calculations in an open‐shell Fe(III) complex unveil the rich electronic and vibrational dynamics detailing the key reactive modes driving the spin‐crossover process.
Soumyajit Mitra +8 more
wiley +2 more sources
Entanglement Hamiltonian of interacting systems: Local temperature approximation and beyond
Physical Review Research, 2021 We investigate the second quantization form of the entanglement Hamiltonian (EH) of various subregions for the ground state of several interacting lattice fermions and spin models.
Mahdieh Pourjafarabadi +3 more
doaj +1 more source
Reduction of Stokes-Dirac structures and gauge symmetry in port-Hamiltonian systems
, 2012 Stokes-Dirac structures are infinite-dimensional Dirac structures defined in terms of differential forms on a smooth manifold with boundary. These Dirac structures lay down a geometric framework for the formulation of Hamiltonian systems with a nonzero ...
Scherpen, Jacquelien M. A. +2 more
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Computability of entropy and information in classical Hamiltonian systems [PDF]
, 2009 We consider the computability of entropy and information in classical Hamiltonian systems. We define the information part and total information capacity part of entropy in classical Hamiltonian systems using relative information under a computable ...
Aberth +23 more
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Advanced Materials, EarlyView.The energetic offset between the donor and the acceptor components in organic photoactive layers is central to the tradeoff between photovoltage and photocurrent losses. This Perspective covers the most important issues surrounding this topic in non‐fullerene acceptor blends, from the difficulty of accurately determining state energies and driving ...
Dieter Neher, Manasi Pranav
wiley +1 more source
Discrete-time modeling of Hamiltonian systems
TURKISH JOURNAL OF ELECTRICAL ENGINEERING & COMPUTER SCIENCES, 2015 The problem of discrete-time modeling of the lumped-parameter Hamiltonian systems is considered for engineering applications. Hence, a novel gradient-based method is presented, exploiting the discrete gradient concept and the forward Euler discretization under the assumption of the continuous Hamiltonian model is known.
Yaprak YALÇIN +2 more
openaire +1 more source