Optimized Lower Bounds for Five-Body Hamiltonians
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Date
2009-08-01
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Kheir-Eddine Boudjemaa
Abstract
A methodology recently proposed for deriving optimized lower bounds for the energies of the ground
states of N-body systems is applied to the five-body case. Such lower bounds result from an optimization process over a certain number of parameters. The so-called universal dynamical constraints, i.e., relations between
the values of the parameters corresponding to the optimized lower bound and which have the properties to
be of dynamical nature and to be independent of the particular form of the potential, are computed in their
totality and great calculational details are given. The optimized lower bound obtained in this way proves to
be saturated, i.e., identical to the exact result, in the harmonic oscillator case. Particular mass configurations
are considered with the corresponding simplifications in the universal dynamical constraints. In relation to the
property of saturability in the case of harmonic interactions, particular attention is devoted to five-body systems
with harmonic interactions. Various mass configurations are considered and for each case the corresponding
ground state energy is derived