Data di Pubblicazione:
2009
Citazione:
About efficient quasi-newtonian schemes for
variational calculations in nuclear structure / G. Puddu. - In: THE EUROPEAN PHYSICAL JOURNAL. A, HADRONS AND NUCLEI. - ISSN 1434-6001. - 42:2(2009 Oct), pp. 281-285.
Abstract:
The Broyden-Fletcher-Goldhaber-Shanno (BFGS) quasi-newtonian scheme is known as the most efficient scheme for variational calculations
of energies. This scheme is actually a member of a one-parameter family of variational methods, known as the Broyden $\beta$-family.
In some applications to light nuclei
using microscopically derived effective hamiltonians starting from accurate nucleon-nucleon potentials, we actually found other members of the same family which have better performance than the BFGS method. We also extend the Broyden $\beta$-family of algorithms to a two-parameter family of rank three updates which has even better performances.
Tipologia IRIS:
01 - Articolo su periodico
Keywords:
Shell model ; nuclear density functional theory
and extensions (includes Hartree-Fock and random-phase approximation) ; variational techniques
Elenco autori:
G. Puddu
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