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Title: Covariant density functional theory with two-phonon coupling in nuclei

Abstract

A full description of excited states within the framework of density functional theory requires energy dependent self energies. We present a new class of many-body models. It allows a parameter free description of the fragmentation of nuclear states induced by mode coupling of two-quasiparticle and two-phonon configurations. The method is applied for an investigation of low-lying dipole excitations in Sn isotopes with large neutron excess.

Authors:
; ;  [1];  [2];  [3]
  1. Physik Department, Technische Universitat Muenchen, D-85747 Garching (Germany) and State Key Lab Nucl. Phys. and Tech., School of Physics, Peking University, Beijing 100871 (China)
  2. (Germany)
  3. (Russian Federation)
Publication Date:
OSTI Identifier:
22075609
Resource Type:
Journal Article
Journal Name:
AIP Conference Proceedings
Additional Journal Information:
Journal Volume: 1491; Journal Issue: 1; Conference: Conference on nuclear structure and dynamics 2012, Opatija (Croatia), 9-13 Jul 2012; Other Information: (c) 2012 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0094-243X
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; COUPLING; DENSITY FUNCTIONAL METHOD; E1-TRANSITIONS; ENERGY DEPENDENCE; EXCITATION; EXCITED STATES; ISOSPIN; M1-TRANSITIONS; MANY-BODY PROBLEM; NEUTRONS; NUCLEAR FRAGMENTATION; NUCLEAR MATTER; NUCLEAR STRUCTURE; QUASIPARTICLE-PHONON MODEL; SELF-ENERGY; TIN ISOTOPES

Citation Formats

Ring, P., Litvinova, E., Tselyaev, V., GSI Helmholtzzentrum fuer Schwerionenforschung, 64291 Darmstadt, and Nuclear Physics Department, St. Petersburg State University, 198504 St. Petersburg. Covariant density functional theory with two-phonon coupling in nuclei. United States: N. p., 2012. Web. doi:10.1063/1.4764241.
Ring, P., Litvinova, E., Tselyaev, V., GSI Helmholtzzentrum fuer Schwerionenforschung, 64291 Darmstadt, & Nuclear Physics Department, St. Petersburg State University, 198504 St. Petersburg. Covariant density functional theory with two-phonon coupling in nuclei. United States. doi:10.1063/1.4764241.
Ring, P., Litvinova, E., Tselyaev, V., GSI Helmholtzzentrum fuer Schwerionenforschung, 64291 Darmstadt, and Nuclear Physics Department, St. Petersburg State University, 198504 St. Petersburg. Sat . "Covariant density functional theory with two-phonon coupling in nuclei". United States. doi:10.1063/1.4764241.
@article{osti_22075609,
title = {Covariant density functional theory with two-phonon coupling in nuclei},
author = {Ring, P. and Litvinova, E. and Tselyaev, V. and GSI Helmholtzzentrum fuer Schwerionenforschung, 64291 Darmstadt and Nuclear Physics Department, St. Petersburg State University, 198504 St. Petersburg},
abstractNote = {A full description of excited states within the framework of density functional theory requires energy dependent self energies. We present a new class of many-body models. It allows a parameter free description of the fragmentation of nuclear states induced by mode coupling of two-quasiparticle and two-phonon configurations. The method is applied for an investigation of low-lying dipole excitations in Sn isotopes with large neutron excess.},
doi = {10.1063/1.4764241},
journal = {AIP Conference Proceedings},
issn = {0094-243X},
number = 1,
volume = 1491,
place = {United States},
year = {2012},
month = {10}
}