Microscopic self-energy calculations and dispersive optical-model potentials
نویسندگان
چکیده
S. J. Waldecker,1 C. Barbieri,2,3,* and W. H. Dickhoff1 1Department of Physics, Washington University, St. Louis, Missouri 63130, USA 2Department of Physics, Faculty of Engineering and Physical Sciences, University of Surrey, Guildford, Surrey GU2 7XH, United Kingdom 3Theoretical Nuclear Physics Laboratory, RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan (Received 21 May 2011; revised manuscript received 11 August 2011; published 29 September 2011)
منابع مشابه
Comparison of Dirac and microscopic Schrödinger optical model potentials for nucleon - nucleus scattering
Detailed comparisons are made between results of calculations for intermediate energy nucleon– 208 Pb scattering using optical potentials obtained from Dirac phenomenology and a microscopic Schrödinger model. The two approaches yield quite similar results for all of the observables with each projectile , including spin observables, suggesting the two models are physically equivalent. A new phen...
متن کاملCasimir Energy of a Dilute Dispersive Dielectric Ball: Realistic Microscopic Model
The Casimir energy of a dilute homogeneous nonmagnetic dielectric ball at zero temperature is derived analytically within a microscopic realistic model of dielectrics for an arbitrary physically possible frequency dispersion of dielectric permittivity ε(iω). Divergences are absent in calculations, a minimum interatomic distance λ is a physical cut-off. Casimir surface force is proved to be attr...
متن کاملA general numerical solution of dispersion relations for the nuclear optical model
A general numerical solution of the dispersion integral relation between the real and the imaginary parts of the nuclear optical potential is presented. Fast convergence is achieved by means of the Gauss–Legendre integration method, which offers accuracy, ease of implementation and generality for dispersive optical model calculations. The use of this numerical integration method in the optical ...
متن کاملNucleon-nucleus optical potential in the particle-hole approach
Feshbach’s projection formalism in the particle-hole model space leads to a microscopic description of scattering in terms of the many-body self-energy. To investigate the feasibility of this approach, an optical potential for 16O is constructed starting from two previous calculations of the self-energy for this nucleus. The results reproduce the background phase shifts for positive parity wave...
متن کاملA ug 2 00 8 Complementary optical – potential analysis of α - particle elastic scattering and induced reactions at low energies
A previously derived semi–microscopic analysis based on the Double Folding Model, for α-particle elastic scattering on A ∼100 nuclei at energies below 32 MeV, is extended to medium mass A ∼50–120 nuclei and energies from ∼13 to 50 MeV. The energy–dependent phenomenological imaginary part for this semi–microscopic optical model potential was obtained including the dispersive correction to the mi...
متن کامل