J. J. Halliwell
Published 2003-01-22Version 1
A brief introduction to the decoherent histories approach to quantum theory is given, with emphasis on its role in the discussion of the emergence of classicality from quantum theory. Some applications are discussed, including quantum-classical couplings, the relationship of the histories approach to quantum state diffusion, and the application of the histories approach to situations involving time in a non-trivial way.
Comments: 26 pages, Latex. To appear in Proceedings of the Conference, Decoherence, Information, Complexity, Entropy (DICE), Piombino, Italy, September, 2002 (edited by T.Elze)
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