Enforced Gaplessness from States with Exponentially Decaying Correlations https://arxiv.org/abs/2503.01977

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Enforced Gaplessness from States with Exponentially Decaying Correlations

It is well known that an exponentially localized Hamiltonian must be gapless if its ground state has algebraic correlations. We show that even certain exponentially decaying correlations can imply...

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Enforced Gaplessness from States with Exponentially Decaying Correlations https://arxiv.org/abs/2503.01977

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