Shape transitions in the weak entanglement approximation.
ORAL
Abstract
Atomic nuclei can exhibit rapid changes in deformation along isotopic chains. Many-body methods such as the full-configuration interaction method struggle to investigate these shape transitions due to the exponentially increasing dimensionality of the model. A recently developed importance truncation scheme dubbed the weak entanglement approximation allows us to investigate these shape transitions at a small fraction of the configuration interaction problem size. In this framework, deformation sensitive observables are calculated for Chromium and Krypton even isotope chains, successfully reproducing the deformed to spherical pattern expected around the semi-magic N = 28 subshell closure. The results are compared to full configuration interaction calculations to compare this new method's applicability to low-lying nuclear structure.
*This work was performed in part under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory under Contract DE-AC52-07NA27344 with support from the Weapon Physics and Design (WPD) Academic Collaboration Team (ACT) University Collaboration program. This material is also based upon work supported by the U.S. Department of Energy, Office of Science, Office of Nuclear Physics, under Award Number DE-FG02-03ER41272.
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Publication: "Shape transitions in the weak-entanglement approximation" (2025) Calvin Johnson, Hayden Frye, Oliver Gorton (planned)
Presenters
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Hayden Curtis Frye
- San Diego State University