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Many-body effects on one-electron energies and wave functions in low-dimensional systems

✍ Scribed by Olivia Pulci; Lucia Reining; Giovanni Onida; Rodolfo Del Sole; Friedhelm Bechstedt

Book ID
117987301
Publisher
Elsevier Science
Year
2001
Tongue
English
Weight
159 KB
Volume
20
Category
Article
ISSN
0927-0256

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## Abstract The formulation developed in Paper I for a closed shell system is extended for a system with one nonclosed shell. Roothaan's restricted Hartree–Fock (RHF) open‐shell wave function is taken as the zero‐order solution. The first‐order SchrΓΆdinger equation is then solved for the spatial pa

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We analyze the divergent contributions to the Hamiltonian for extended, nonmetallic systems in one dimension, to both the ground-state correlation energy and to the correlated band structure. It is shown that the contribution from the long-range divergent part of the Hamiltonian tends to zero as 1rM