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SUMMARY:Constraints on neutron skin thickness and symmetry energy
DTSTART;VALUE=DATE-TIME:20241024T081500Z
DTEND;VALUE=DATE-TIME:20241024T083000Z
DTSTAMP;VALUE=DATE-TIME:20260517T031649Z
UID:indico-contribution-4418@cern.ch
DESCRIPTION:Speakers: Nikolay Arsenyev (Bogoliubov Laboratory of Theoretic
 al Physic\, Joint Institute for Nuclear Research)\nThe structure of exotic
  neutron-rich nuclei is one of the main science drivers in contemporary nu
 clear physics research [1]. The new measurements of pygmy dipole (PDR) and
  giant dipole (GDR) resonances in neutron-rich nuclei have sparked advance
 ments in nuclear models. The quasiparticle random phase approximation\, ut
 ilizing the self-consistent mean-field derived from Skyrme effective inter
 actions\, is a widely used tool for describing the PDR and GDR. This appro
 ach made it possible to a successful description of the properties of low-
 lying states and the characteristics of giant multipole resonances in sphe
 rical nuclei [2\,3].\nDue to the anharmonicity of vibrations there is a co
 upling between simple particle-hole configurations and more complex states
  [4\,5]. As an illustration\, we study the properties of the low-lying dip
 ole states in the neutron-rich Ca and Ni isotopes [6\,7]. This reveals a n
 umber of characteristic features of the low-energy E1 modes. The effect of
  the low-energy E1 strength on the electric dipole polarizability is discu
 ssed [5]. The correlations between the electric dipole polarizability\, th
 e symmetry energy\, and neutron skin thickness are studied [8].\nThe resea
 rch was supported within the framework of the scientific program of the Na
 tional Center for Physics and Mathematics\, topic no. 6 “Nuclear and Rad
 iation Physics” (stage 2023-2025).\n\n[1] A. Zilges\, D.L. Balabanski\, 
 J. Isaak\, and N. Pietralla\, Prog. Part. Nucl. Phys. 122\, 103903 (2022).
 \n[2] N. Paar\, D. Vretenar\, E. Khan\, and G. Colò\, Rep. Progr. Phys. 7
 0\, 691 (2007).\n[3] E.G. Lanza\, L. Pellegri\, A. Vitturi\, and M.V. Andr
 és\, Prog. Part. Nucl. Phys. 129\, 104006 (2023).\n[4] V.G. Soloviev\, Th
 eory of Atomic Nuclei: Quasiparticles and Phonons. Bristol/Philadelphia 19
 92.\n[5] A.P. Severyukhin\, N.N. Arsenyev\, and N. Pietralla\, Phys. Rev. 
 C. 104\, 024310 (2021).\n[6] N.N. Arsenyev\, A.P. Severyukhin\, V.V. Voron
 ov\, and N.V. Giai\, Phys. Rev. C. 95\, 054312 (2017).\n[7] N.N. Arsenyev\
 , A.P. Severyukhin\, V.V. Voronov\, and N.V. Giai\, Phys. Part. Nucl. 50\,
  528 (2019).\n[8] N.N. Arsenyev\, and A.P. Severyukhin\, Moscow Univ. Phys
 . Bull. 79\, 200 (2024).\n\nhttps://indico.particle.mephi.ru/event/436/con
 tributions/4418/
LOCATION: Moskvorechye 2
URL:https://indico.particle.mephi.ru/event/436/contributions/4418/
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