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| Hauptseite > Publikationsdatenbank > Nuclear Lattice Simulations using Symmetry-Sign Extrapolation |
| Journal Article | FZJ-2016-00918 |
; ; ; ; ; ;
2015
Springer
Berlin
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Please use a persistent id in citations: http://hdl.handle.net/2128/13247 doi:10.1140/epja/i2015-15092-1
Abstract: Projection Monte Carlo calculations of lattice Chiral Effective Field Theory suffer from sign oscillations to a varying degree dependent on the number of protons and neutrons. Hence, such studies have hitherto been concentrated on nuclei with equal numbers of protons and neutrons, and especially on the alpha nuclei where the sign oscillations are smallest. Here, we introduce the 'symmetry-sign extrapolation' method, which allows us to use the approximate Wigner SU(4) symmetry of the nuclear interaction to systematically extend the Projection Monte Carlo calculations to nuclear systems where the sign problem is severe. We benchmark this method by calculating the ground-state energies of the $^{12}$C, $^6$He and $^6$Be nuclei, and discuss its potential for studies of neutron-rich halo nuclei and asymmetric nuclear matter.
Keyword(s): Nuclear Physics (2nd)
; Current Contents - Physical, Chemical and Earth Sciences ; IF < 5 ; JCR ; Nationallizenz
; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection
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