We evaluate the static charge-charge structure factor considering projected wave-functions for the 2D t-J Model We compare with recent results from a high temperature expansion by Putikka et al. and conclude that there is spin-charge separation at small length scales.
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Valentí, R., Gros, C. Spin-charge separation at small length scales in the 2D t-J Model. J Low Temp Phys 99, 509–511 (1995). https://doi.org/10.1007/BF00752331