Abstract
Abstract The multiconfiguration Hartree-Fock (MCHF) method is applied to the exactly solvable model of Lipkin, Meshkov and Glick. The energy spectrum is investigated for truncation of the Hartree-Fock basis states in the weak, intermediate and strong coupling regions. There is a good agreement between the computed low lying states and the exact ones, in the weak and intermediate coupling regions. But the low lying spectrum is strongly modified in the strong coupling region. An explanation is given for this behavior. The ground state energy is found to be very well reproduced in all the three regions.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
