Susceptibility of the Spin 1/2 Heisenberg Antiferromagnetic Chain
Sebastian Eggert, Ian Affleck, Minoru Takahashi
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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