87 research outputs found
Low-lying resonances of Be9Lambda : Faddeev calculation with Pade-approximants
Configuration space Faddeev equations are applied to describe the Be9Lambda
low-lying resonances of the ground band in the alpha+alpha+Lambda cluster
model. The method of analytical continuation in coupling constant is used.Comment: 4 pages, 3 Postscript figures, Talk at the 18th International IUPAP
Conference on Few-Body Problems in Physics, Aug. 21-26, 2006, Santos, Brazi
Integral equations for three-body Coulombic resonances
We propose a novel method for calculating resonances in three-body Coulombic
systems. The method is based on the solution of the set of Faddeev and
Lippmann-Schwinger integral equations, which are designed for solving the
three-body Coulomb problem. The resonances of the three-body system are defined
as the complex-energy solutions of the homogeneous Faddeev integral equations.
We show how the kernels of the integral equations should be continued
analytically in order that we get resonances. As a numerical illustration a toy
model for the three- system is solved.Comment: 9 pages, 1 EPS figur
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