An upper bound for the ground-state energy of an antiferromagnetic chain with next-nearest-neighbor interaction

H.P. van de Braak, W.J. Caspers, P.K.H. Gragert, M.W.M. Willemse

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Abstract

A trial function for the ground state of the antiferromagnetic linear chain leads to an equation for an upper bound of the ground-state energy per spin. This equation is solved exactly.
Original languageEnglish
Pages (from-to)487-497
JournalJournal of statistical physics
Volume20
Issue number5
DOIs
Publication statusPublished - 1979

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