Hamiltonian systems form the bedrock for modelling a vast range of physical phenomena, from celestial mechanics to quantum dynamics. Their evolution is governed by a Hamiltonian function that ...

Science Progress (1933-), Vol. 104, No. 4 (2021), pp. 1-26 (26 pages) Singularity is one of the important features in invariant structures in several physical phenomena reflected often in the ...

Generically hamiltonian systems are nonintegrable. However there are few tools in order to prove that a given system is nonintegrable. For two degrees of freedom the usual methods rely upon the ...

For the first time, physicists in Italy have created a 'lump soliton': an extremely stable packet of light waves which can travel through 3D space, and even interact with other solitons without losing ...