Fig. 4: Comparison of experimental and simulated holon binding energy at momentum k = 0.
From: Traces of electron-phonon coupling in one-dimensional cuprates
The experiment data (open circle) are taken from ref. 19. We use the broadening as the error bar for the simulated data. For the holon binding energy, the Hubbard-extended Holstein model (open square) matches the experiment data very well, while the extended-Hubbard model (open diamond) deviates from the experiment at higher doping. Here we take th = 530 meV.
