Unitary dressing transformations and exponential decay below threshold for quantum spin systems. III, IV (Q920456)

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scientific article; zbMATH DE number 4163779
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Unitary dressing transformations and exponential decay below threshold for quantum spin systems. III, IV
scientific article; zbMATH DE number 4163779

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    Unitary dressing transformations and exponential decay below threshold for quantum spin systems. III, IV (English)
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    1990
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    quantum spin systems
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    Hamiltonian operators
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