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Susceptibility of the Spin 1/2 Heisenberg Antiferromagnetic Chain

Sebastian Eggert·Ian Affleck·Minoru Takahashi
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Abstract

Highly accurate results are presented for the susceptibility, $χ(T)$ of the $s=1/2$ Heisenberg antiferromagnetic chain for all temperatures, using the Bethe ansatz and field theory methods. After going through a rounded peak, $χ(T)$ approaches its asympotic zero-temperature value with infinite slope.

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Sebastian Eggert, Ian Affleck, Minoru Takahashi. 1994-04-19. Susceptibility of the Spin 1/2 Heisenberg Antiferromagnetic Chain. https://doi.org/10.1103/physrevlett.73.332

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