Ab initio symmetry-adapted emulator for studying emergent collectivity and clustering in nuclei

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F23%3A00571102" target="_blank" >RIV/61389005:_____/23:00571102 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.3389/fphy.2023.1064601" target="_blank" >https://doi.org/10.3389/fphy.2023.1064601</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.3389/fphy.2023.1064601" target="_blank" >10.3389/fphy.2023.1064601</a>

Result language
angličtina
Original language name
Ab initio symmetry-adapted emulator for studying emergent collectivity and clustering in nuclei
Original language description
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 Li-6 and C-12. 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.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10303 - Particles and field physics

Project
<a href="/en/project/GA22-14497S" target="_blank" >GA22-14497S: Advancing the frontiers of first-principle modeling of atomic nuclei</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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