In fully connected models, integrability remains robust against non-extensive and extensive one-body perturbations but becomes extremely fragile under extensive two-body perturbations, which trigger chaos at infinitesimal strength within symmetry-defined energy bands and produce fragmented eigenstte
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In the Z3 chiral clock model, DQPTs emerge only for special angles in the chiral phase, with an analytical expression derived for the zeros of the dynamical partition function.
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Fragmented eigenstate thermalization versus robust integrability in long-range models
In fully connected models, integrability remains robust against non-extensive and extensive one-body perturbations but becomes extremely fragile under extensive two-body perturbations, which trigger chaos at infinitesimal strength within symmetry-defined energy bands and produce fragmented eigenstte
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Emergent dynamical quantum phase transition in a $Z_3$ symmetric chiral clock model
In the Z3 chiral clock model, DQPTs emerge only for special angles in the chiral phase, with an analytical expression derived for the zeros of the dynamical partition function.