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Decoherence in quantum spin systems

H. De Raedt·V. V. Dobrovitski
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Abstract

Computer simulations of decoherence in quantum spin systems require the solution of the time-dependent Schrodinger equation for interacting quantum spin systems over extended periods of time. We use exact diagonalization, Chebyshev polynomial technique, four Suzuki-formula algorithms, and the short-iterative-Lanczos method to solve a simple model for decoherence of a quantum spin system by an environment consisting of quantum spins, and compare advantages and limitations of different algorithms.

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H. De Raedt, V. V. Dobrovitski. 2003-02-13. Decoherence in quantum spin systems. https://arxiv.org/abs/quant-ph/0301121

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