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cond-mat/0609346:
These calculations employ the Bethe-Ansatz Local-Density Approximation (BALDA) in its fully numerical formulation [13] (for odd N the ground
state has a finite polarization and thus a generalization to spin-BALDA is necessary). The BALDA method allows us to efficiently treat complex systems with a very large number of sites. The combined use of DMRG and BALDA allows a detailed understanding of the problem and paves the way for further extensions.
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