Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

The European Physical Journal A

The use of coherent states in the variational treatment of proton-neutron interactions

Jorge G. Hirsch, Peter Oto Hess, Osvaldo Civitarese

Published Jul 1, 2002• 0 citations
Publisher
DOI
10.1140/epja/i2002-10029-5

Related papers

Semi-classical treatment of proton–neutron monopole interaction

Apolodor Aristotel Raduta, L. Pacearescu, V. Baran +2 more

Nuclear Physics A•Aug 1, 2000•32 citations

Semi-classical description of a system with proton–neutron interaction

Apolodor Aristotel Raduta, O. Haug, F. Šimkovic +1 more

Nuclear Physics A•May 1, 2000•8 citations

New features of some proton–neutron collective states

Apolodor Aristotel Raduta, C. M. Raduta, B. Codirla

arXiv:nucl-th/0503041•Nuclear Physics A•Oct 1, 2000•5 citations

Variational calculations of models of nuclear and neutron matter

I.E. Lagaris, Vijay R. Pandharipande, Robert B. Wiringa

Nuclear Physics A•Oct 1, 1979•10 citations

Variational Approach to Configuration Interaction

Richard R. Chasman

A variational method is developed to determine configuration interaction wave functions. The method is straightforward and is applied to a pairing Hamiltonian with constant matrix elements, for which exact eigenvalues are available. Comparisons are made with the exact results. Calculations can be carried out to any desired degree of accuracy. The method is also applied to a Hamiltonian that has neutron-neutron, proton-proton, and neutron-proton pairing. No difficulties are found in extending the method to this Hamiltonian that has many collective modes. In practice, the method scales linearly with , where is the number of variational basis states.

Physical Review Letters•Dec 20, 2005•5 citations

Pair-vibrational states in the presence of neutron–proton pairing

Richard R. Chasman, P. Van Isacker

Pair vibrations are studied for a Hamiltonian with neutron–neutron, proton–proton and neutron–proton pairing. The spectrum is found to be rich in strongly correlated, low-lying excited states. Changing the ratio of diagonal to off-diagonal pairing matrix elements is found to have a large impact on the excited-state spectrum. The variational configuration interaction (VCI) method, used to calculate the excitation spectrum, is found to be in very good agreement with exact solutions for systems with large degeneracies having equal T=0 and T=1 pairing strengths.

arXiv:1001.2979•Physics Letters B•Jan 19, 2010•4 citations
A variational method is developed to determine configuration interaction wave functions. The method is straightforward and is applied to a pairing Hamiltonian with constant matrix elements, for which exact eigenvalues are available. Comparisons are made with the exact results. Calculations can be carried out to any desired degree of accuracy. The method is also applied to a Hamiltonian that has neutron-neutron, proton-proton, and neutron-proton pairing. No difficulties are found in extending the method to this Hamiltonian that has many collective modes. In practice, the method scales linearly with , where is the number of variational basis states.
Pair vibrations are studied for a Hamiltonian with neutron–neutron, proton–proton and neutron–proton pairing. The spectrum is found to be rich in strongly correlated, low-lying excited states. Changing the ratio of diagonal to off-diagonal pairing matrix elements is found to have a large impact on the excited-state spectrum. The variational configuration interaction (VCI) method, used to calculate the excitation spectrum, is found to be in very good agreement with exact solutions for systems with large degeneracies having equal T=0 and T=1 pairing strengths.