Entanglement entropy saturates to finite constants set by virtual bond structure in fully and partially dimerized phases of frustrated spin chains, showing multiple values and multi-band features in the partially dimerized case.
This phase emerges along the exactly solvable line J3/(J1 − 2J2) = 1/13 for moderate J2, and remains stable for large J3 across all J2 values
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Entanglement signature of fully and partially dimerized phases in frustrated spin chains
Entanglement entropy saturates to finite constants set by virtual bond structure in fully and partially dimerized phases of frustrated spin chains, showing multiple values and multi-band features in the partially dimerized case.