Itools /
## Mp-icorrelation
Usage: mp-icorrelation [options] <model> <Op1> <Op2> <psi> Allowed options: --help show this help message --nmax arg Maximum number of bosons per site (for bh model) --string arg make a string correlation function with this operator --spin arg spin per site, for spin models --nosite don't calculate the on-site correlations <op1(i)op2(i)> -l [ --length ] arg length of correlation [default 100] The By default, the program calculates all correlations in the unit cell <op1(x) op2(y)> where x varies over all sites in the first unit cell, and y varies over all sites in unit cells up to the one containing the site specified by The required parameters are the model, the first and second operators of the two-point correlator, and the wavefunction file. The model is not the same as the Hamiltonian used for mp-idmrg5, but is related: the model contains information only about the local basis of the lattice sites, and a single model may be used with many different Hamiltonian's. As at 18-11-2009, the available models are sf-u1, spin, spin-su2, spin-u1, spin-z2, tj-u1, tj-u1su2, klm-u1su2, hubbard-so4, hubbard-u1, bh, bh-u1. The To calculate local expectation values, use the identity operator The output is 4 columns, |

Page last modified on November 18, 2009, at 02:27 PM