Prof.
Oryu Shinsho
(Department of Physics, Faculty of Science and Technology, Tokyo University of Science, Yamazaki, Noda City, Chiba 278-8510 Japan)
Oral Presentations
Oral Presentation
Our two recent developments will be presented.
1) We confirm the reliability of the well-known Alt’s Coulomb renormalization method (CRM). It is found that the CRM is only available for a very- long-range screened Coulomb potential (SCP), where asymptotic property can be satisfied. However, such an SCP calculation in momentum space is considerably difficult because of the cancelation of...
Prof.
Alexander Motovilov
(Bogoliubov Laboratory of Theoretical Physics, JINR)
Oral Presentations
Oral Presentation
We consider a momentum-space multi-channel Hamiltonian that underwent the complex rotation, a kind of inhomogeneous complex scaling. Isolated non-real eigenvalues of this Hamiltonian are called the complex rotation resonances. For a class of sufficiently rapidly decreasing and analytic interactions, we prove that the complex rotation resonances do correspond to the scattering matrix...
Prof.
Isaac Lagaris
(University of Ioannina)
Oral Presentations
Oral Presentation
A new class of Artificial Neural Networks is described incorporating a node density function and functional weights.
This network containing an infinite number of nodes, excels in generalizing and possesses a superior extrapolation capability.
Mr
Emile Meoto
(Department of Physics, University of South Africa)
Quantum systems with a strangeness degree of freedom are very important as
they provide an extra dimension, and hence a deeper insight into nuclear matter. Usually
phenomenological potentials obtained through meson exchange theories are used in investigating
these hypernuclear systems. In this paper potentials for lambda-nucleon interactions in the
spin singlet and spin triplet states,...
Dr
Elena Kolganova
(BLTP JINR)
Oral Presentations
Oral Presentation
The van der Waals three-body systems at ultralow energies are studied using
Faddeev equations in configuration space. The spectra of LiHe2 are calculated. The results obtained indicate on the Efimov character of the excited states.
Dr
Bahati Mukeru
(University of South Africa)
Oral Presentations
Oral Presentation
We study the 6Li breakup on different target masses in order to investigate the dependence of continuum-continuum couplings and Coulomb-nuclear interference on the target mass. We show that excluding the continuum-continuum couplings, the integrated total and nuclear breakup cross sections decrease linearly as function of A_T^{1/3}, while the integrated Coulomb breakup decrease linearly as...
Prof.
Gaotsiwe Joel Rampho
(University of South Africa)
Oral Presentations
Oral Presentation
The two-variable integrodifferential equation for few-body systems is solved using the Lagrange-mesh method. The method transforms the equation into a system of algebraic equations that are solved as a non-symmetric matrix eigenvalue problem. Convergence properties of the solution in relation to the problem parameters is investigated. The accuracy of the converged solution is tested by...
Prof.
Emiko Hiyama
(Nishina Center, RIKEN, Wako, 351-0198, Japan)
Oral Presentations
Oral Presentation
One of the most important subjects in physics is to calculate few-body Schroedinger equation accurately. By solving the equation, we can predict various observable before measurement and can obtain new understanding. For this purpose, it is necessary to develop the method to calculate three- and four-body problems precisely and to apply to various fields such as nuclear physic as well as...
Prof.
Hiroshi Masui
(Kitami Institute of Technology)
Oral Presentations
Oral Presentation
We have developed the formalism of the Jost function method (JFM) to study unstable nuclei. The component of the unbound states becomes important in the field of quantum systems where open channels are included in the system, e.g. study of unstable nuclei. From the aspect of the few-body treatment, the position of the S-matrix pole is a crucial key to characterize the system. The pole position...
Prof.
Sergi Rakistianski
(UP)
Oral Presentations
Oral Presentation
A new method for finding the partial decay-widths for multi-channel resonances is suggested. It is based on using the Jost matrices. These matrices can be either calculated (when the multi-channel potential is known) or found by fitting experimental data (when they are available). In both cases the procedure for obtaining the partial widths is the
same and is simple. It does not require any...
Prof.
LAURO TOMIO
(INSTITUTO TECNOLÓGICO DE AERONÁUTICA)
Oral Presentations
Oral Presentation
Low-energy scaling properties of three-body systems are investigated, by considering the elastic $s-$wave collision of a particle in a bound-state formed by the remaining two-body system. In the first part of my presentation I will concentrate in the case of the halo nucleus $^{20}$C, where we have examined the neutron$-^{19}$C scattering properties near the critical condition for the...
