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arxiv: cond-mat/9609278 · v1 · submitted 1996-09-29 · ❄️ cond-mat

Computer Simulations of Quantum Chains

classification ❄️ cond-mat
keywords quantumaccuracycomputersimulationsallowsapproximationassesschain
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We report recent progress in computer simulations of quantum systems described in the path-integral formulation. For the example of the $\phi^4$ quantum chain we show that the accuracy of the simulation may greatly be enhanced by a combination of multigrid update techniques with a refined discretization scheme. This allows us to assess the accuracy of a variational approximation.

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