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SUMMARY:Role of Quarks in Nuclear Structure
DTSTART;VALUE=DATE-TIME:20220714T145500Z
DTEND;VALUE=DATE-TIME:20220714T151500Z
DTSTAMP;VALUE=DATE-TIME:20261017T214003Z
UID:indico-contribution-582@events.sinp.msu.ru
DESCRIPTION:Speakers: Genis Musulmanbekov (JINR)\nWe propose semi-empirica
 l quark model of nuclear structure that is based on the quark model of nuc
 leon structure\, Strongly Correlated Quark Model (SCQM). Nuclei are constr
 ucted due to junctions of SU(3) color fields of quarks of neighbor nucleon
 s [1]. According to SCQM\, arrangement of nucleons within nuclei reveals t
 he emergence of the face-centered cubic (FCC) symmetry [2].  The model of 
 nuclear structure becomes isomorphic to the shell model and\, moreover\, c
 omposes the features of cluster models. Binding of nucleons in stable nucl
 ei are provided by quark loops which form three and four nucleon correlati
 ons. On the quark level the nuclear shell closures starting from s-shell c
 orrespond to the octahedral symmetry.  The closure of a subsequent shells 
 (p\, d\, f\, ...)  leads to rearrangement  and disappearance of the previo
 us ones\, i.e.  to no-core shells. Quark loops leading to four-nucleon cor
 relations are responsible for the binding energy enhancement in even-even 
 nuclei which are formed by virtual alpha-clusters. Two neighbor virtual  a
 lpha-clusters possess one common nucleon which couples them.  The model de
 scribes the "magic" numbers without spin-orbital  coupling of the shell mo
 del. According to the model "halo" nuclei emerge according to quark loops 
 resulting in three nucleon correlations. The model allows to describe nucl
 ear deformation\, predict the boundary on nuclear stability and etc.\n\nRe
 ferences\n\n[1] G. Musulmanbekov in Frontiers of Fundamental Physics\, New
  York\, Kluwer Acad/Plenum Publ.\, 2001\, p. 109 - 120.\; PEPAN Lett.\, 20
 21\, v.18\, N5\, p. 548-558.\n\n[2] G. Musulmanbekov and N.D. Cook\, Phys.
  Atom. Nucl. 71\, 1226\n\nhttps://events.sinp.msu.ru/event/8/contributions
 /582/
LOCATION: Физический ф-т\, 5-19
URL:https://events.sinp.msu.ru/event/8/contributions/582/
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