Toward understanding the microscopic origin of nuclear clustering

Abstract

Open Quantum System (OQS) description of a many-body system involves interaction of Shell Model (SM) states through the particle continuum. In realistic nuclear applications, this interaction may lead to collective phenomena in the ensemble of SM states. We claim that the nuclear clustering is an emergent, near-threshold phenomenon, which cannot be elucidated within the Closed Quantum System (CQS) framework. We approach this problem by investigating the near-threshold behavior of Exceptional Points (EPs) in the realistic Continuum Shell Model (CSM). The consequences for the alpha-clustering phenomenon are discussed.

Special Issue of Fortschritte der Physik - Progress of Physics: Physics of Non-Hermitian Systems (10 pages, 10 figures)

References in corpus (4)

• Shell Model in the Complex Energy Plane
• Two-proton radioactivity
• Threshold Effects in Multi-channel Coupling and Spectroscopic Factors in Exotic Nuclei
• Simplified modeling of cluster-shell competition in ${}^{20}$Ne and ${}^{24}$Mg

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• Structures and decay properties of extremely proton-rich nuclei ${}^{11,12}$O
• Novel and simple description for a smooth transition from $\alpha$-cluster wave functions to $jj$-coupling shell model wave functions
• Single-particle and collective motion in unbound deformed ${}^{39}\text{Mg}$
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• Resonant spectra of quadrupolar anions
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• Probing nuclear forces beyond the nuclear drip line: The cases of ${}^{16}$F and ${}^{15}$F
• Perspectives on few-body cluster structures in exotic nuclei
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• Alpha clustering and flow in ultra-relativistic heavy-ion collisions
• Clusterization in nuclear states at the edge of stability
• The conceptual and mathematical foundations of the MC-QTAIM
• Description of ${}^7$Be and ${}^7$Li within the Gamow Shell Model
• Description of the proton-decaying 0${}_2^{+}$ resonance of the $\alpha$ particle