Embedding the sawtooth limit in a zigzag ladder of two coupled SU(2)_1 CFTs with extreme velocity ratio cancels the leading staggered interaction, leaving a marginal twist that collapses the apical spin velocity and causes energy-scale collapse independent of spatial correlation length.
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cond-mat.str-el 2years
2026 2verdicts
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In the Jahn-Teller-Hubbard molecule, conventional quadrupoles vanish but composite two-body electron-phonon quadrupoles emerge that are selection-rule decoupled from them, and the ground-state entanglement involves phonon angular momenta L_ph=2,3 superposed with electron L=1,2 states.
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Velocity collapse and non-conformal spiral phase in the sawtooth spin chain
Embedding the sawtooth limit in a zigzag ladder of two coupled SU(2)_1 CFTs with extreme velocity ratio cancels the leading staggered interaction, leaving a marginal twist that collapses the apical spin velocity and causes energy-scale collapse independent of spatial correlation length.
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Spherical-tensor description of the Jahn--Teller--Hubbard molecule and local electron--phonon entanglement
In the Jahn-Teller-Hubbard molecule, conventional quadrupoles vanish but composite two-body electron-phonon quadrupoles emerge that are selection-rule decoupled from them, and the ground-state entanglement involves phonon angular momenta L_ph=2,3 superposed with electron L=1,2 states.