47 citations · 72 across the 23 of their papers we have counts for
23 papers
On the Luttinger-Ward functional and the convergence of skeleton diagrammatic series expansion of the self-energy for Hubbard-like models
Behnam Farid
We consider a number of questions regarding the Luttinger-Ward functional and the many-body perturbation series expansion of the proper self-energy specific to un…
Many-body perturbation expansions without diagrams. I. Normal states
Behnam Farid
On the basis of an exact perturbational expression for the interacting one-particle Green function corresponding to bosons / fermions in terms of the bare interaction potential…
Comment on "Breaking the theoretical scaling limit for predicting quasi-particle energies: The stochastic GW approach", by Daniel Neuhauser et al., arXiv:1402.5035v1
Behnam Farid
We show that the recently-introduced formalism by Neuhauser et al. for the calculation of the quasi-particle energies of electronic systems within the framework of the GW approxima…
Some rigorous results concerning the uniform metallic ground states of single-band Hamiltonians in arbitrary dimensions
Behnam Farid
We reproduce and review some of the main results of three of our earlier papers, utilizing in doing so a considerably more transparent formalism than originally utilized. The most…
Comment on "Absence of Luttinger's Theorem", by Kiaran B. Dave, Philip W. Phillips and Charles L. Kane, arXiv:1207.4201
Behnam Farid
In this Comment, we first present general arguments showing that the absence of the Luttinger theorem (LT) for the SU(N) model of Dave, Phillips and Kane (DPK) is rooted in the non…
Comment on "Violation of the Luttinger sum rule within the Hubbard model on a triangular lattice", by J. Kokalj and P. Prelovsek [Eur. Phys. J. B 63, 431 (2008), arXiv:arXiv:0709.0263]
Behnam Farid
Using the first-order series expansion of the function G(k;mu), in powers of mu' = mu - U/2, pertaining to the insulating ground state of a single-band Hubbard Hamiltonian at half-…