We apply the transfer-matrix density matrix renormalization group (DMRG) approach to frustrated quantum spin chains, down to T0ex0ex=0ex0ex0.025K in the thermodynamic limit. The incommensurability problem of exact diagonalization and the negative sign problem of quantum Monte Carlo vanish completely. For illustration, we give results for chains with next-nearest-neighbor frustration and for the delta chain, which has been a testbed for many thermodynamic methods. The DMRG approach proves to be an extremely powerful method for the old problem of the thermodynamics of frustrated systems.
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Maisinger et al. (1998) studied this question.
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