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The Passage from Random Walk to Diffusion in Quantum Probability
K. R. Parthasarathy
Journal of Applied Probability
Vol. 25, A Celebration of Applied Probability (1988), pp. 151-166
Published by: Applied Probability Trust
Stable URL: http://www.jstor.org/stable/3214153
Page Count: 16
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The notion of a quantum random walk in discrete time is formulated and the passage to a continuous time diffusion limit is established. The limiting diffusion is described in terms of solutions of certain quantum stochastic differential equations.
Journal of Applied Probability © 1988 Applied Probability Trust