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 asymptotic zero-temperature value with infinite slope.
- Received 16 March 1994
DOI:https://doi.org/10.1103/PhysRevLett.73.332
©1994 American Physical Society