Field theory of the quantum kicked rotor

Physics – Condensed Matter

Scientific paper

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Some changes in connection with the discussion of the rotor's localization length have been made (cf. last paragraph)

Scientific paper

10.1103/PhysRevLett.77.4536

The quantum kicked rotor is investigated by field theoretical methods. It is shown that the effective theory describing the long wave length physics of the system is precisely the supersymmetric nonlinear sigma-model for quasi one-dimensional metallic wires. This proves that the analogy between chaotic systems with dynamical localization and disordered metals can indeed be exact. The role of symmetries is discussed.

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