3 papers
physics.pop-ph2016
Surprises in numerical expressions of physical constants
Ariel Amir, Mikhail Lemeshko, Tadashi Tokieda
In science, as in life, `surprises' can be adequately appreciated only in the presence of a null model, what we expect a priori. In physics, theories sometimes express the values o…
math.DS2012
Deformation of geometry and bifurcation of vortex rings
James Montaldi, Tadashi Tokieda
We construct a smooth family of Hamiltonian systems, together with a family of group symmetries and momentum maps, for the dynamics of point vortices on surfaces parametrized by th…
math.DS2002
Vortex dynamics on a cylinder
James Montaldi, Anik Soulière, Tadashi Tokieda
Point vortices on a cylinder (periodic strip) are studied geometrically. The Hamiltonian formalism is developed, a non-existence theorem for relative equilibria is proved, equilibr…