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Quantum Monte Carlo

1986
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Science
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Monte Carlo methods are good for evaluating probabilistic integrals. A key feature of quantum mechanics is that we must deal with complex amplitudes rather than real positive probabilities. Intrinsically, Monte Carlo methods are not a "natural" match with quantum problems, and can only be successfully used where the quantum problem can be made to look like some classical problem. For example, the ground state wavefunction of a single particle or Bose system is everywhere positive, and so we can

doi:10.1126/science.231.4738.555
pmid:17750966
fatcat:l2va26n6tvd77hs72ixdxu5sie