svd_shrink.m

Generates sets of vector-covector pairs for the parallel implementation of the time propagation algorithm described in http://dx.doi.org/10.1063/1.3679656 (Equation 9).

Syntax

    [vec,cov]=svd_shrink(spin_system,rho,tol)

Parameters

        rho   -   density matrix

        tol   -   singluar value drop tolerance

Outputs

        vec   -   vectors as columns of a matrix

        cov   -   covectors as columns of a matrix

See also

evolution.m, krylov.m, reduce.m, acomm.m, arnoldi.m, atranspose.m, aux_mat.m, binpack.m, cheap_norm.m, cheb_coeff.m, clean_up.m, dirdiff.m, eigenfields.m, expdrop.m, expmint.m, expmint2.m, fftdiff.m, fourdif.m, fourlap.m, frob_chop.m, gaussfun.m, hdot.m, herm_spline.m, jacobianest.m, keep_rank.m, krondelta.m, kronm_new.m, logfactorial.m, lorentzcon.m, lorentzfun.m, md5_hash.m, mprealloc.m, remncomm.m, remtrace.m, rspert.m, rspt_eig.m, snormpdf.m, tikhoind.m, tikhonov.m, trapdiff.m, unit_oper.m, unit_state.m, vvpert.m, Kernel_utilities

Version 2.3, authors: Ilya Kuprov, Luke Edwards