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Quantum Monte Carlo calculations of light nuclei with local chiral two- and three-nucleon interactions

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Schwenk,  Achim
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

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Citation

Lynn, J. E., Tews, I., Carlson, J., Gandolfi, S., Gezerlis, A., Schmidt, K. E., et al. (2017). Quantum Monte Carlo calculations of light nuclei with local chiral two- and three-nucleon interactions. Physical Review C, 96(5): 054007. doi:10.1103/PhysRevC.96.054007.


Cite as: https://hdl.handle.net/21.11116/0000-0001-0074-C
Abstract
Local chiral effective field theory interactions have recently been developed and used in the context of quantum Monte Carlo few- and many-body methods for nuclear physics. In this work, we go over detailed features of local chiral nucleon-nucleon interactions and examine their effect on properties of the deuteron, paying special attention to the perturbativeness of the expansion. We then turn to three-nucleon interactions, focusing on operator ambiguities and their interplay with regulator effects. We then discuss the nuclear Green's function Monte Carlo method, going over both wave-function correlations and approximations for the two- and three-body propagators. Following this, we present a range of results on light nuclei: Binding energies and distribution functions are contrasted and compared, starting from several different microscopic interactions.