Uncertainties of Euclidean Time Extrapolation in Lattice Effective Field Theory
classification
⚛️ nucl-th
hep-lat
keywords
euclideantimeextrapolationsnlefteffectivefieldlatticetheory
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Extrapolations in Euclidean time form a central part of Nuclear Lattice Effective Field Theory (NLEFT) calculations using the Projection Monte Carlo method, as the sign problem in many cases prevents simulations at large Euclidean time. We review the next-to-next-to-leading order NLEFT results for the alpha nuclei up to $^{28}$Si, with emphasis on the Euclidean time extrapolations, their expected accuracy and potential pitfalls. We also discuss possible avenues for improving the reliability of Euclidean time extrapolations in NLEFT.
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