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Shrinking point bifurcations of resonance tongues for piecewise-smooth, continuous maps

D J W Simpson and J D Meiss

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Recommended by A Chenciner

Resonance tongues are mode-locking regions of parameter space in which stable periodic solutions occur; they commonly occur, for example, near Neimark–Sacker bifurcations. For piecewise-smooth, continuous maps these tongues typically have a distinctive lens-chain (or sausage) shape in two-parameter bifurcation diagrams. We give a symbolic description of a class of 'rotational' periodic solutions that display lens-chain structures for a general N-dimensional map. We then unfold the codimension-two, shrinking point bifurcation, where the tongues have zero width. A number of codimension-one bifurcation curves emanate from shrinking points and we determine those that form tongue boundaries.


PACS

45.10.Db Variational and optimization methods

05.45.Ac Low-dimensional chaos

45.20.Jj Lagrangian and Hamiltonian mechanics

05.45.Df Fractals

05.45.Jn High-dimensional chaos

05.45.Yv Solitons

05.45.Pq Numerical simulations of chaotic systems

MSC

37G15 Bifurcations of limit cycles and periodic orbits

37E45 Rotation numbers and vectors

65H17 Eigenvalues, eigenvectors (See also 47Hxx, 47Jxx, 58C40, 58E07, 90C30)

65P30 Bifurcation problems

65P20 Numerical chaos

37E30 Homeomorphisms and diffeomorphisms of planes and surfaces

Subjects

Mathematical physics

Computational physics

Statistical physics and nonlinear systems

Dates

Issue 5 (May 2009)

Received 20 September 2008, in final form 19 March 2009

Published 16 April 2009



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