Quasi-Nambu-Goldstone modes exist universally in many-body scar models in the degenerate limit, with properties determined by the quasisymmetry of the scar tower.
Building upon the framework of the quasisymmetry space, we introduce a deforming matrix-product operator [57, 58] (MPO) de- noted as ˆW , depicted as follows: ˆW = /uni22EFW W W
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Quasi-Nambu-Goldstone modes in many-body scar models
Quasi-Nambu-Goldstone modes exist universally in many-body scar models in the degenerate limit, with properties determined by the quasisymmetry of the scar tower.