Thermodynamic Density Matrix renormalization Group Study of the Magnetic   Susceptibility of Half-integer Quantum Spin Chains
  It is shown that White's density matrix renormalization group technique can be adapted to obtain thermodynamic quantities. As an illustration, the magnetic susceptibility of Heisenberg S=1/2 and S=3/2 spin chains are computed. A careful finite size analysis is made to determine the range of temperatures where the results are reliable. For the S=1/2 chain, the comparison with the exact Bethe ansatz curve shows an agreement within 1% down to T=0.05J. 
S. Moukouri and L.G. Caron (Universit\'e de Sherbrooke, QC, Canada)