Corpus ID: 117152079

Renormalization group method for weakly coupled quantum chains: comparison with exact diagonalization

@inproceedings{Alvarez2004RenormalizationGM,
  title={Renormalization group method for weakly coupled quantum chains: comparison with exact diagonalization},
  author={J. V. Alvarez and Samuel Moukouri},
  year={2004}
}
  • J. V. Alvarez, Samuel Moukouri
  • Published 2004
  • Physics
  • We show that numerical quasi-one-dimensional renormalization group allows accurate study of weakly coupled chains with modest computational effort. We perform a systematic comparison with exact diagonalization results in two and three-leg spin ladders with a transverse Hamiltonian that can involve frustration. Due to the variational nature of the algorithm, the accuracy can be arbitrarily improved enlarging the basis of eigenstates of the density matrix defined in the transverse direction. We… CONTINUE READING

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