The standard map (also known as the Chirikov–Taylor map or as the Chirikov standard map) is an areapreserving chaotic map from a square with side onto itself.^{[1]} It is constructed by a Poincaré's surface of section of the kicked rotator, and is defined by:
where and are taken modulo .
The properties of chaos of the standard map were established by Boris Chirikov in 1969. See more details at Scholarpedia entry.
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Transcription
Contents
Physical model
This map describes the Poincaré's surface of section of the motion of a simple mechanical system known as the kicked rotator. The kicked rotator consists of a stick that is free of the gravitational force, which can rotate frictionlessly in a plane around an axis located in one of its tips, and which is periodically kicked on the other tip.
The standard map is a surface of section applied by a stroboscopic projection on the variables of the kicked rotator.^{[1]} The variables and respectively determine the angular position of the stick and its angular momentum after the nth kick. The constant K measures the intensity of the kicks on the kicked rotator.
The kicked rotator approximates systems studied in the fields of mechanics of particles, accelerator physics, plasma physics, and solid state physics. For example, circular particle accelerators accelerate particles by applying periodic kicks, as they circulate in the beam tube. Thus, the structure of the beam can be approximated by the kicked rotor. However, this map is interesting from a fundamental point of view in physics and mathematics because it is a very simple model of a conservative system that displays Hamiltonian chaos. It is therefore useful to study the development of chaos in this kind of system.
Main properties
For the map is linear and only periodic and quasiperiodic orbits are possible. When plotted in phase space (the θ–p plane), periodic orbits appear as closed curves, and quasiperiodic orbits as necklaces of closed curves whose centers lie in another larger closed curve. Which type of orbit is observed depends on the map's initial conditions.
Nonlinearity of the map increases with K, and with it the possibility to observe chaotic dynamics for appropriate initial conditions. This is illustrated in the figure, which displays a collection of different orbits allowed to the standard map for various values of . All the orbits shown are periodic or quasiperiodic, with the exception of the green one that is chaotic and develops in a large region of phase space as an apparently random set of points. Particularly remarkable is the extreme uniformity of the distribution in the chaotic region, although this can be deceptive: even within the chaotic regions, there are an infinite number of diminishingly small islands that are never visited during iteration, as shown in the closeup.
Circle map
The standard map is related to the circle map, which has a single, similar iterated equation:
as compared to
for the standard map, the equations reordered to emphasize similarity. In essence, the circle map forces the momentum to a constant.
See also
Notes
 ^ ^{a} ^{b} Ott, Edward (2002). Chaos in Dynamical Systems. Cambridge University Press New, York. ISBN 0521010845.
References
 Chirikov, B.V. Research concerning the theory of nonlinear resonance and stochasticity. Preprint N 267, Institute of Nuclear Physics, Novosibirsk (1969) (in Russian) [Engl. Transl., CERN Trans. 71  40, Geneva, October (1971), Translated by A.T.Sanders]. link
 Chirikov, B.V. A universal instability of manydimensional oscillator systems. Phys. Rep. v.52. p.263 (1979) Elsvier, Amsterdam.
 Lichtenberg, A.J. & Lieberman, M.A. (1992). Regular and Chaotic Dynamics. Springer, Berlin. ISBN 9780387977454. Springer link
 Ott, Edward (2002). Chaos in Dynamical Systems. Cambridge University Press New, York. ISBN 0521010845.
 Sprott, Julien Clinton (2003). Chaos and TimeSeries Analysis. Oxford University Press. ISBN 0198508409.
External links
 Standard map at MathWorld
 Chirikov standard map at Scholarpedia
 Website dedicated to Boris Chirikov
 Interactive Java Applet visualizing orbits of the Standard Map, by Achim Luhn
 Mac Application for the Standard Map, by James Meiss
 Interactive Javavascript Applet Standard Map on experiences.math.cnrs.fr