2 papers
cond-mat.str-el2014
A Davidson-Lanczos iteration method for computation of continued-fraction expansion of the Green's function at very low temperatures: Applications to the dynamical mean field theory
Medha Sharma, M. A. H. Ahsan
We present a combination method based on orignal version of Davidson algorithm for extracting few of the lowest eigenvalues and eigenvectors of a sparse symmetric Hamiltonian matri…
cond-mat.str-el2013
Organization of the Hilbert Space for Exact Diagonalization of Hubbard Model
Medha Sharma, M. A. H. Ahsan
We present an alternative scheme to the widely used method of representing the basis of one-band Hubbard model through the relation given by H.…