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Your search keyword '"D. Minossi"' showing total 3 results
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3 results on '"D. Minossi"'

1. Properties of ^{4}He and ^{6}Li with improved chiral EFT interactions

Author

Angelo Calci, Robert Roth, Hermann Krebs, Richard Furnstahl, Pieter Maris, Andreas Nogga, Hiroyuki Kamada, Kai Hebeler, Kacper Topolnicki, D. Minossi, Henryk Witała, Hugh Potter, Evgeny Epelbaum, S. Binder, R. Skibiński, James P. Vary, Ulf-G. Meißner, Joachim Langhammer, S. Liebig, and Jacek Golak

Subjects
Similarity (geometry), Magnetic moment, 010308 nuclear & particles physics, Computer science, Physics, QC1-999, High Energy Physics::Lattice, Spectrum (functional analysis), Renormalization group, 01 natural sciences, Engineering physics, Renormalization, Quantum electrodynamics, 0103 physical sciences, Convergence (routing), Effective field theory, ddc:530, 010306 general physics, Ground state
Abstract

We present recent results for 4 He and 6 Li obtained with improved NN interactions derived from chiral effective field theory up to N4 LO. The many-body calculations are performed order-by-order in the chiral expansion. At N3 LO and N4 LO additional renormalization using the Similarity Renormalization Group is adopted to improve numerical convergence of the many-body calculations. We discuss results for the ground state energies, as well as the magnetic moment and the low-lying spectrum of 6 Li.

Published
2016
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2. Few-nucleon systems with state-of-the-art chiral nucleon-nucleon forces

Author

Hiroyuki Kamada, Sven Binder, Angelo Calci, Evgeny Epelbaum, R. Skibiński, Hermann Krebs, Andreas Nogga, Pieter Maris, Richard Furnstahl, S. Liebig, Jacek Golak, Henryk Witała, Ulf-G. Meißner, Joachim Langhammer, D. Minossi, Kacper Topolnicki, Hugh Potter, Kai Hebeler, Robert Roth, and James P. Vary

Subjects
Physics, Particle physics, Nuclear Theory, 010308 nuclear & particles physics, Scattering, FOS: Physical sciences, Order (ring theory), Observable, State (functional analysis), 01 natural sciences, Nuclear Theory (nucl-th), Range (mathematics), 0103 physical sciences, Effective field theory, ddc:530, Statistical physics, 010306 general physics, Nucleon, Nuclear Experiment, Energy (signal processing)
Abstract

We apply improved nucleon-nucleon potentials up to fifth order in chiral effective field theory, along with a new analysis of the theoretical truncation errors, to study nucleon-deuteron (Nd) scattering and selected low-energy observables in 3H, 4He, and 6Li. Calculations beyond second order differ from experiment well outside the range of quantified uncertainties, providing truly unambiguous evidence for missing three-nucleon forces within the employed framework. The sizes of the required three-nucleon force contributions agree well with expectations based on Weinberg's power counting. We identify the energy range in elastic Nd scattering best suited to study three-nucleon force effects and estimate the achievable accuracy of theoretical predictions for various observables., 5 pages, 5 figures

Published
2015
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3. Low-energy neutron-deuteron reactions with N 3 LO chiral forces

Author

Evgeny Epelbaum, R. Skibiński, Kai Hebeler, Hiroyuki Kamada, Pieter Maris, Ulf-G. Meißner, Andreas Nogga, Sven Binder, Angelo Calci, James Vary, D. Minossi, Hermann Krebs, Kacper Topolnicki, Robert Roth, Véronique Bernard, Jacek Golak, H. Witała, Joachim Langhammer, and S. Liebig

Subjects
Physics, Elastic scattering, Nuclear and High Energy Physics, Faddeev equations, Chiral perturbation theory, Nuclear Theory, 010308 nuclear & particles physics, FOS: Physical sciences, Breakup, 01 natural sciences, Nuclear Theory (nucl-th), Nuclear physics, Matrix (mathematics), Low energy, Deuterium, 0103 physical sciences, ddc:530, Neutron, Nuclear Experiment, 010306 general physics
Abstract

We solve three-nucleon Faddeev equations with nucleon-nucleon and three-nucleon forces derived consistently in the framework of chiral perturbation theory at next-to-next-to-next-to-leading order in the chiral expansion. In this first investigation we include only matrix elements of the three-nucleon force for partial waves with the total two-nucleon (three-nucleon) angular momenta up to 3 (5/2). Low-energy neutron-deuteron elastic scattering and deuteron breakup reaction are studied. Emphasis is put on Ay puzzle in elastic scattering and cross sections in symmetric-space-star and neutron-neutron quasi-free-scattering breakup configurations, for which large discrepancies between data and theory have been reported., 22 pages, 7 figures

Published
2014
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