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SUMMARY:Spectroscopy of even-even open-shell nuclei via self-consistent Go
 rkov-Green’s function calculations
DTSTART:20250320T130000Z
DTEND:20250320T140000Z
DTSTAMP:20260520T010500Z
UID:indico-event-11567@indico.ijclab.in2p3.fr
CONTACT:guillaume.hupin@ijclab.in2p3.fr
DESCRIPTION:Speakers: Gianluca Stellin (IJCLab)\n\n\nThe fundamentals of t
 he ab-initio Self-Consistent Gorkov Green’s function (SCGGF) [1\, 2] app
 roach for the investigation of low-lying energy spectrum of the semi-magic
  even-even nuclei are presented. In the last decade\, the SCGGF method has
  brought a significant renewal in the realm of ab-initio approaches to nuc
 lear structure\, marking a step forward in the knowledge of bulk nuclear p
 roperties of even-even nuclei\, such as the ones lying along the Ar-Cr [3\
 , 4] isotopic chains. The access to the one-particle propagator has allowe
 d the study of ground and excited states of neighbouring odd-A isotopes [5
 –7]. Nonetheless\, the prediction of excited energy levels and reduced e
 lectric and magnetic multipole transition  probabilities calls for the in
 troduction of the polarizationpropagator\, previously not embedded in the 
 U(1)Z × U(1)N symmetry breaking formalism. In quantum chemistry\, present
 -day approaches for the description of the spectrum of medium-sized organi
 c molecules [8\, 9] are based on diagrammatic many-body Green’s function
  theory applied to the polarization propagator at third order in the algeb
 raic diagrammatic construction (ADC) approach [10–13]. Another return of
  this is study will be provided by the prediction of new shell closures in
  neutron-rich even-even nuclei\, identified through the local maxima in th
 e energy of the 2+1 state and in the related electric quadrupole transitio
 n probability\, B(E2\, 0+1 → 2+1 ) [14].\n[1] L.P. Gorkov\, Sov. Phys. J
 ETP 34\, 3\, 505-508 (1958). [2] V. Soma\, T. Duguet and C. Barbieri\, Ph
 ys. Rev. C 84\, 064317 (2011).[3] V. Soma\, A. Cipollone\, C. Barbieri\, P
 . Navratil and T.  Duguet\, Phys. Rev. C 89\, 061301(R) (2014).[4] V. Som
 a\, C. Barbieri\, T. Duguet and P. Navratil\, Eur. Phys. J. A 57\, 135 (20
 21).[5] M. Rosenbusch et al.\, Phys. Rev. Lett. 114\, 202501 (2015).[6] S.
  Chen et al.\, Phys. Rev. Lett. 123\, 142501 (2019).[7] Y.L. Sun et al.\, 
 Phys. Lett. B 802\, 135215 (2020).[8] P.H.P. Harbach\, M. Wormit and A. Dr
 euw\, J. Chem. Phys. 141\, 064113 (2014).[9] A. Dreuw and M. Wormit\, Comp
 ut. Mol. Sci. 5\, 82-95 (2015).[10] J. Schirmer\, Phys. Rev. A 26\, 2395-2
 416 (1982).[11] A.B. Trofimov\, G. Stelter and J. Schirmer\, J. Chem.  Ph
 ys. 111\, 9982-9999 (1999).[12] J. Brand and L.S. Cederbaum\, Adv. Quantum
  Chem. 38\, 65-120 (2000).[13] A.B. Trofimov\, G. Stelter and J. Schirmer\
 , J. Chem. Phys. 117\, 6402-6409 (2002).[14] I. Bentley\, Y. Colon Rodrıg
 uez\, S. Cunningham and A. Aprahamian\, Phys. Rev. C 93\, 044337 (2016).\n
  \n\n\nHow to reach the seminar room:\nWhereabouts of the laboratory on t
 he Paris-Saclay campus\n\nBat. 100\, general room map\n\n\nhttps://indico.
 ijclab.in2p3.fr/event/11567/
LOCATION:100/2-A201 - Salle A201 (IJCLab)
URL:https://indico.ijclab.in2p3.fr/event/11567/
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