Computer Simulations of Quantum Chains
classification
❄️ cond-mat
keywords
quantumaccuracycomputersimulationsallowsapproximationassesschain
read the original abstract
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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