The usefulness of restrictions for variational ground state lower bounds of a simple quantum spin lattice
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1983 ◽
Vol 16
(25)
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pp. L913-L918
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2016 ◽
Vol 18
(8)
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pp. 083011
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1986 ◽
Vol 54-57
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pp. 1203-1204
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1991 ◽
Vol 27
(4)
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pp. 657-679
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