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arXiv · 1406.0454

Local chiral effective field theory interactions and quantum Monte Carlo applications

A. Gezerlis·I. Tews·E. Epelbaum·M. Freunek·S. Gandolfi·K. Hebeler·A. Nogga·A. Schwenk
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Abstract

We present details of the derivation of local chiral effective field theory interactions to next-to-next-to-leading order, and show results for nucleon-nucleon phase shifts and deuteron properties for these potentials. We then perform systematic auxiliary-field diffusion Monte Carlo calculations for neutron matter based on the developed local chiral potentials at different orders. This includes studies of the effects of the spectral-function regularization and of the local regulators. For all orders, we compare the quantum Monte Carlo results with perturbative many-body calculations and find excellent agreement for low cutoffs.

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A. Gezerlis, I. Tews, E. Epelbaum, M. Freunek, S. Gandolfi, K. Hebeler, A. Nogga, A. Schwenk. 2014-11-26. Local chiral effective field theory interactions and quantum Monte Carlo applications. https://doi.org/10.1103/physrevc.90.054323

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