Quantum Chaos with Spin-Chains in Pulsed Magnetic Fields | Zendy

T. Boness | Zendy; M. M. A. Stocklin | Zendy; T. S. Monteiro | Zendy

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Quantum Chaos with Spin-Chains in Pulsed Magnetic Fields

Author(s) -

T. Boness,

M. M. A. Stocklin,

T. S. Monteiro

Publication year - 2007

Publication title -

progress of theoretical physics supplement

Language(s) - English

Resource type - Journals

ISSN - 0375-9687

DOI - 10.1143/ptps.166.85

Subject(s) - physics , quantum chaos , spin wave , spin (aerodynamics) , quantum , quantum mechanics , magnon , standard map , magnetic field , spin engineering , excitation , classical limit , chaotic , quantum dynamics , spin polarization , ferromagnetism , thermodynamics , artificial intelligence , computer science , electron

Recently it was found that the dynamics in a Heisenberg spin-chain subjectedto a sequence of periodic pulses from an external, parabolic, magnetic fieldcan have a close correspondence with the quantum kicked rotor (QKR). The QKR isa key paradigm of quantum chaos; it has as its classical limit the well-knownStandard Map. It was found that a single spin excitation could be convertedinto a pair of non-dispersive, counter-propagating spin coherent statesequivalent to the accelerator modes of the Standard Map. Here we consider howother types of quantum chaotic systems such as a double-kicked quantum rotor ora quantum rotor with a double-well potential might be realized with spinchains; we discuss the possibilities regarding manipulation of the one-magnonspin waves.Comment: 10 pages, 4 figures. Submitted to PTP special issue for QMC200

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