82 citations · 969 across the 61 of their papers we have counts for
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Translation-Invariant Parent Hamiltonians of Valence Bond Crystals
Daniel Huerga, Andres Greco, Claudio Gazza +1
We present a general method to construct translation-invariant and SU(2) symmetric antiferromagnetic parent Hamiltonians of valence bond crystals (VBC). The method is based on a ca…
Charge-Density-Excitation Spectrum in the t-t'-J-V Model
Andres Greco, Hiroyuki Yamase, Matias Bejas
We study the density-density correlation function in a large-N scheme of the t-t'-J-V model. When the nearest-neighbor Coulomb interaction V is zero, our model exhibits phase separ…
A note on the path integral representation for Majorana fermions
Andres Greco
Majorana fermions are currently of huge interest in the context of nanoscience and condensed matter physics. Different to usual fermions, Majorana fermions have the property that t…
Plasmon excitations in layered high-Tc cuprates
Andres Greco, Hiroyuki Yamase, Matias Bejas
Motivated by the recent resonant inelastic x-ray scattering (RIXS) experiment for the electron-doped cuprates Nd_{2-x}Ce_{x}CuO_{4} with x around 0.15, we compute the density-densi…