2002/03/14 by A. G. Donchev, Alexander Donchev, N. N. Kolesnikov +4
Engineering · Mathematics · Physics and Astronomy · #Atomic Physics (physics.atom-ph) #FOS: Physical sciences #Gas Dynamics and Kinetic Theory #Nuclear physics research studies #Spacecraft Dynamics and Control #physics.atom-ph
paper · pdf · doi:10.48550/arxiv.physics/0203043
latex, 15 pages, 5 figures, 2 tables (corrected figure which prevents pdf creation)
openalex publication_date 2002/03/14 · arxiv created 2002/03/18 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
By the use of the variational method with exponential trial functions the upper and lower bounds of energy are calculated for a number of non-relativistic three-body Coulomb and nuclear systems. The formulas for calculation of upper and lower bounds for exponential basis are given, the lower bounds for great part of systems were calculated for the first time. By comparison of calculations for different bases the efficiency of exponential trial functions and their universality in respect to masses of particles and interaction are demonstrated. The advantage of exponential basis manifests mostly evident for the systems with comparable masses, though its use in one-center and two-center problems is justified too. For effective solution of two-center problem a carcass modification of the trial function is proposed. The stability of various three-particle Coulomb systems is analyzed.