Decoherence in quantum spin systems

Details Decoherence in quantum spin systems Decoherence in quantum spin systems

2003-01-23

arxiv.org/abs/quant-ph/0301121v3

Physics

Quantum Physics

5 pages (llncs.sty, Springer style file), 1 EPS figure. The paper will appear in "Computer Simulation Studies in Condensed-Mat

Scientific paper

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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