Random matrix analysis of the monopole strength distribution in 208Pb

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dc.contributor.author Severyukhin, A. P.
dc.contributor.author Aberg, S.
dc.contributor.author Arsenyev, N. N.
dc.contributor.author Nazmitdinov,Rashid
dc.contributor.author Pichugin, K. N.
dc.date.accessioned 2018-12-10T11:05:12Z
dc.identifier.uri http://hdl.handle.net/11201/148654
dc.description.abstract [eng] We study statistical properties of the 0+ spectrum of 208Pb in the energy region Ex <20 MeV. We use the Skyrme interaction SLy4 as our model Hamiltonian to create a single-particle spectrum and to analyze excited states. The finite-rank separable approximation for the particle-hole interaction enables us to perform the calculations in large configuration spaces. We show that while the position of the monopole resonance centroid is determined by one-phonon excitations of 0+, the phonon-phonon coupling is crucial for the description of the strength distribution of the 0+ spectrum. In fact, this coupling has an impact on the spectral rigidity Δ3(L) which is shifted towards the random matrix limit of the Gaussian orthogonal ensembles.
dc.format application/pdf
dc.relation.isformatof https://doi.org/10.1134/S1063778816060223
dc.relation.ispartof Physics of Atomic Nuclei, 2017, vol. 79, num. 6, p. 835-841
dc.rights , 2017
dc.subject.classification 53 - Física
dc.subject.other 53 - Physics
dc.title Random matrix analysis of the monopole strength distribution in 208Pb
dc.type info:eu-repo/semantics/article
dc.date.updated 2018-12-10T11:05:13Z
dc.rights.accessRights info:eu-repo/semantics/embargoedAccess
dc.identifier.doi https://doi.org/10.1134/S1063778816060223

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