Intrinsic translational symmetry breaking in a doped Mott insulator by Zhu, Zheng, Sheng, D. N., Weng, Zheng-Yu

“…A central issue of Mott physics, with symmetries being fully retained in the spin background, concerns the charge excitation. In a two-leg spin ladder with a spin gap, an injected hole can exhibit either a Bloch wave or a density wave by tuning the ladder anisotropy through a “quantum critical point” (QCP). …”
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