61 citations · 192 across the 5 of their papers we have counts for
4 papers
Low energy theory of the t-t'-t''-U Hubbard Model at half-filling: interaction strengths in cuprate superconductors and an effective spin-only description of La_2CuO_4
J. -Y. P. Delannoy, M. J. P. Gingras, P. C. W. Holdsworth +1
Spin-only descriptions of the half-filled one-band Hubbard model are relevant for a wide range of Mott insulators. In addition to the usual Heisenberg exchange, many new types of i…
Site Dilution in the Half-Filled One-Band Hubbard Model: Ring Exchange, Charge Fluctuations and Application to La2Cu_{1-x}(Mg/Zn)_xO4
J. -Y. P. Delannoy, A. G. Del Maestro, M. J. P. Gingras +1
We study the ground state quantum spin fluctuations around the Néel ordered state for the one-band () Hubbard model on a site-diluted square lattice. An effective spin Hamilto…
Kraichnan flow in a square: an example of integrable chaos
Raphael Chetrite, Jean-Yves Delannoy, Krzysztof Gawedzki
The Kraichnan flow provides an example of a random dynamical system accessible to an exact analysis. We study the evolution of the infinitesimal separation between two Lagrangian t…
Neel order, ring exchange and charge fluctuations in the half-filled Hubbard model
J. -Y. P. Delannoy, M. J. P. Gingras, P. C. W. Holdsworth +1
We investigate the ground state properties of the two dimensional half-filled one band Hubbard model in the strong (large-U) to intermediate coupling limit ({\it i.e.} away from th…