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Ab initio symmetry-...
Ab initio symmetry-adapted emulator for studying emergent collectivity and clustering in nuclei
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- Becker, K. S. (author)
- Louisiana State University
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- Launey, K. D. (author)
- Louisiana State University
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- Ekström, Andreas, 1980 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Dytrych, T. (author)
- Louisiana State University
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(creator_code:org_t)
- 2023-03-01
- 2023
- English.
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In: Frontiers in Physics. - : Frontiers Media SA. - 2296-424X. ; 11
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https://research.cha... (primary) (free)
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Abstract
Subject headings
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- We discuss emulators from the ab initio symmetry-adapted no-core shell-model framework for studying the formation of alpha clustering and collective properties without effective charges. We present a new type of an emulator, one that utilizes the eigenvector continuation technique but is based on the use of symplectic symmetry considerations. This is achieved by using physically relevant degrees of freedom, namely, the symmetry-adapted basis, which exploits the almost perfect symplectic symmetry in nuclei. Specifically, we study excitation energies, point-proton root-mean-square radii, along with electric quadrupole moments and transitions for 6Li and 12C. We show that the set of parameterizations of the chiral potential used to train the emulators has no significant effect on predictions of dominant nuclear features, such as shape and the associated symplectic symmetry, along with cluster formation, but slightly varies details that affect collective quadrupole moments, asymptotic normalization coefficients, and alpha partial widths up to a factor of two. This makes these types of emulators important for further constraining the nuclear force for high-precision nuclear structure and reaction observables.
Subject headings
- NATURVETENSKAP -- Fysik -- Subatomär fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Subatomic Physics (hsv//eng)
- NATURVETENSKAP -- Fysik -- Annan fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Other Physics Topics (hsv//eng)
- NATURVETENSKAP -- Kemi -- Teoretisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Theoretical Chemistry (hsv//eng)
Keyword
- nuclear collectivity
- 6Li
- nuclear clustering
- emulators
- ab initio symmetry-adapted no-core shell model
- eigenvector continuation
- 12C
Publication and Content Type
- art (subject category)
- ref (subject category)
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