Abstract
The Hubbard Hamiltonian is investigated by means of a new variational trial wave function. The trial wave function includes either intrasite and nearest-neighbor correlations in an explicit form. To calculate density matrices Kikuchi's pseudoensemble method is used. The case of a half-filled fermionic band is carefully investigated in the limit of a large number of lattice sites. The ground state energy and correlation functions are determined for Bethe lattices with z = 2,4 and 6 nearest neighbors.
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.
