29 citations · 411 across the 64 of their papers we have counts for
Showing 2000Show all
3 papers · 1 filter
cond-mat.str-el2000
Spectral function of transverse spin fluctuations in an antiferromagnet
Avinash Singh
The spectral function of transverse spin fluctuations, including the contributions from both the single-particle and the collective (magnon) excitations in an antiferromagnet, is e…
cond-mat.stat-mech2000★ 1 cited
Breakdown of the Onsager reaction field theory in two dimensions
Avinash Singh
It is shown that for the spin 1/2 anisotropic Heisenberg model the result for the transition temperature is completely insensitive to the anisotropy within the Onsager reaction fie…
cond-mat.str-el2000
Equation of motion approach for the Hubbard model: improved decoupling scheme, charge fluctuations, and the metal-insulator transition
Avinash Singh
A new decoupling scheme is developed for the Hubbard model which provides a unified description of the spin-symmetric (paramagnetic metallic and insulating) phases as well as the b…