Study of Nuclear Clustering from an 
<i>Ab Initio</i>
 Perspective

Kravvaris, Konstantinos; Volya, Alexander

doi:10.1103/physrevlett.119.062501

Cited by 56 publications

(54 citation statements)

References 72 publications

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“…A complementary understanding [87] likely comes in terms of cluster molecular structure [9,77]. For these light nuclei, where only a handful of lowest-energy states are truly bound, a more complete understanding requires going beyond a bound-state formalism towards approaches which can more directly identify clustering degrees of freedom underlying resonances [88,89].…”

Section: Resultsmentioning

confidence: 99%

Probing ab initio emergence of nuclear rotation

et al. 2020

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Structural phenomena in nuclei, from shell structure and clustering to superfluidity and collective rotations and vibrations, reflect emergent degrees of freedom. Ab initio theory describes nuclei directly from a fully microscopic formulation. We can therefore look to ab initio theory as a means of exploring the emergence of effective degrees of freedom in nuclei. For the illustrative case of emergent rotational bands in the Be isotopes, we establish an understanding of the underlying oscillator space and angular momentum (orbital and spin) structure. We consider no-core configuration interaction (NCCI) calculations for 7,9,11 Be with the Dae-jeon16 internucleon interaction. Although shell model or rotational degrees of freedom are not assumed in the ab initio theory, the NCCI results are suggestive of the emergence of effective shell model degrees of freedom (0 ω and 2 ω excitations) and LS-scheme rotational degrees of freedom, consistent with an Elliott-Wilsdon SU(3) description. These results provide some basic insight into the connection between emergent effective collective rotational and shell model degrees of freedom in these light nuclei and the underlying ab initio microscopic description. arXiv:1912.00083v1 [nucl-th]

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Section: Resultsmentioning

confidence: 99%

Probing ab initio emergence of nuclear rotation

et al. 2020

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“…The survival of such states remains quite puzzling [19,20]. Examples of such broad states experimentally known in select light nuclei are shown in Fig.…”

Section: Search For Superradiance In Atomic Nucleimentioning

confidence: 99%

“…[32]. It includes energies and alpha decay widths of select resonances in 10 Be, both experimentally observed and theoretically predicted, as well as theoretical spectroscopic factors S (s) from structural calculations [11,36], and the dynamic ones S [19]. To clarify, the table features two different theoretical approaches, the energies listed as well as the structural spectroscopic factors follow the shell model calculation that uses an effective Hamiltonian [37] with a closed 4 He core.…”

Section: Rotational Bands In 10 Bementioning

confidence: 99%

“…The dynamic spectroscopic factors are obtained from the same Hamiltonian using the RGM approach discussed above. Detailed discussion of various strategies and approximations as well as relations to algebraic techniques used for clustering can be found in the series of papers [11,36,19]. The spectroscopic factors are compared with observed reduced widths θ 2 α = Γ α /Γ SW .…”

Section: Rotational Bands In 10 Bementioning

confidence: 99%

“…Following our recent study in Ref. [19], we utilize here a no-core shell model approach with the JISP16 [24] microscopic interaction Hamiltonian H. First we construct wave functions for each alpha particle within the no-core shell model using a harmonic oscillator (HO) single particle basis. Then we build cluster relative motion basis channels |Φ n , which are configurations where two alpha particles are in a relative state described by a HO wave function with radial quantum number n and orbital quantum number .…”

Section: Search For Superradiance In Atomic Nucleimentioning

confidence: 99%

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