148 citations · 644 across the 16 of their papers we have counts for
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Momentum average approximation for models with electron-phonon coupling dependent on the phonon momentum
Glen L. Goodvin, Mona Berciu
We generalize the momentum average (MA) approximation to study the properties of models with momentum-dependent electron-phonon coupling. As in the case of the application of the o…
Survival of the Dirac points in rippled graphene
Lucian Covaci, Mona Berciu
We study the effects of the rippling of the graphene sheet on the quasiparticle dispersion. This is achieved using a generalization to the honeycomb lattice of the Momentum Average…
Systematic improvement of the Momentum Average approximation for the Green's function of a Holstein polaron
Mona Berciu, Glen L. Goodvin
We show how to systematically improve the Momentum Average (MA)approximation for the Green's function of a Holstein polaron, bysystematically improving the accuracy of the self-ene…
The Green's Function of the Holstein Polaron
Glen L. Goodvin, Mona Berciu, George A. Sawatzky
We present a novel, highly efficient yet accurate analytical approximation for the Green's function of a Holstein polaron. It is obtained by summing all the self-energy diagrams, b…
Experimental evidence of paired hole states in model high- compounds
A. Rusydi, P. Abbamonte, M. Berciu +6
The distribution of holes in SrCaCuO (SCCO) is revisited with semi-emperical reanalysis of the x-ray absorption (XAS) data and exact-diagonalized cluster…
Critical phenomena and quantum phase transition in long range Heisenberg antiferromagnetic chains
Nicolas Laflorencie, Ian Affleck, Mona Berciu
Antiferromagnetic Hamiltonians with short-range, non-frustrating interactions are well-known to exhibit long range magnetic order in dimensions, but exhibit only quasi lo…