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Type of publication: research article
Type of publication (PDB): Straipsnis Clarivate Analytics Web of Science / Article in Clarivate Analytics Web of Science (S1)
Field of Science: Fizika / Physics (N002)
Author(s): Germanas, Darius;Kalinauskas, Ramutis Kazys;Kamuntavičius, Gintautas Pranciškus;Žemaičiūnienė, Rasa;Mickevičius, Saulius
Title: Converging upper and lower bounds for ground-state energies of atomic nuclei
Is part of: European physical journal. A, Hadrons and Nuclei. Berlin : Springer, Vol. 25, iss. 3 (2005)
Extent: p. 379-385
Date: 2005
Keywords: Density matrices
Abstract: By expanding the wave function in terms of the translationally invariant basis of harmonic oscillator functions, we calculate the converging upper (variational) bound for the energy. It is shown that one can construct lower bounds using the reduced density matrix that corresponds to the upper bound. These lower bounds converge to an exact value with the expansion of the basis. We perform the calculations of both bounds with realistic nucleon-nucleon potential for ground states of the triton and the alpha-particle
Affiliation(s): Fizikos institutas,
Fizinių ir technologijos mokslų centro Fizikos institutas
Vytauto Didžiojo universitetas
Šiaulių universitetas
Appears in Collections:Universiteto mokslo publikacijos / University Research Publications

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