Results 71 to 80 of about 287 (170)

Nearly Periodic Maps and Geometric Integration of Noncanonical Hamiltonian Systems. [PDF]

J Nonlinear Sci, 2023
Burby JW, Hirvijoki E, Leok M.
europepmc   +1 more source

Exocomets of β Pictoris

Astronomy & Astrophysics
Aims. We investigate the dynamical evolution of particles in the β Pic system to determine likely formation pathways to the exocomet populations observed in the present day. We aim to relate these results to similar studies recently carried out since the
Jaworska K. P., Hoeijmakers H. J.
doaj   +1 more source

The quest for Magrathea planets

Astronomy & Astrophysics
Context. Planetary formation might occur at different stages of the stellar evolution. In particular, theoretical studies have been focusing on addressing whether formation can occur around compact binaries that evolved beyond the main sequence ...
Nigioni Arianna, Turrini Diego, Danielski Camilla, Polychroni Danae, Chambers John E.   +4 more
doaj   +1 more source

Which Algorithm Best Propagates the Meyer-Miller-Stock-Thoss Mapping Hamiltonian for Non-Adiabatic Dynamics? [PDF]

J Chem Theory Comput, 2023
Cook LE, Runeson JE, Richardson JO, Hele TJH.   +3 more
europepmc   +1 more source

Bound chaotic photon orbits in a magnetized Kerr–Newman spacetime

European Physical Journal C: Particles and Fields
Unlike those in the nonmagnetized counterpart, equatorial photon effective potentials outside the horizons allow for the existence of closed pockets or potential wells corresponding to local minimum values in a magnetized Kerr–Newman spacetime of Gibbons
Caiyu Liu, Daqi Yang, Xin Wu
doaj   +1 more source

Symplectic encoders for physics-constrained variational dynamics inference. [PDF]

Sci Rep, 2023
Bacsa K, Lai Z, Liu W, Todd M, Chatzi E.
europepmc   +1 more source

Structure-preserving learning for multi-symplectic PDEs

Advanced Modeling and Simulation in Engineering Sciences
This paper presents an energy-preserving machine learning method for inferring reduced-order models (ROMs) by exploiting the multi-symplectic form of partial differential equations (PDEs).
Süleyman Yıldız, Pawan Goyal, Peter Benner   +2 more
doaj   +1 more source

Feedback Integrators for Mechanical Systems with Holonomic Constraints. [PDF]

Sensors (Basel), 2022
Chang DE, Perlmutter M, Vankerschaver J.
europepmc   +1 more source

Approximation of nearly-periodic symplectic maps via structure-preserving neural networks. [PDF]

Sci Rep, 2023
Duruisseaux V, Burby JW, Tang Q.
europepmc   +1 more source

Multi-symplectic integrator of the generalized KdV-type equation based on the variational principle. [PDF]

Sci Rep, 2019
Wei Y, Zhang XQ, Shao ZY, Gao JQ, Yang XF.   +4 more
europepmc   +1 more source