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Listening to Noise
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We show how sign problems in simulations of many-body systems can manifest themselves in the form of heavy-tailed correlator distributions, similar to what is seen in electron propagation through disordered media. We propose an alternative statistical approach for extracting ground state energies in such systems, illustrating the method with a toy model and with lattice data for unitary fermions and for baryons in QCD.
Forward citations
Cited by 2 Pith papers
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Empirical investigation of nuclear correlation function distributions in lattice QCD
The distribution of lattice QCD nuclear correlation function samples is well described by O(N) model distributions with fitted N approximately 2/B at large time separations.
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Determining universal spectra from probability distributions
Exploratory refinement of universal n-body spectra predictions using probability distributions of correlation functions via lattice methods and analytic expansions.
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