There is no way in the current code. You can use fulldiag for such a small system though.

Matthias

On 24 Mar 2011, at 17:26, Andriy Zhugayevych wrote:

For a system with multiple eigenvalues (e.g. ground state of the extended Hubbard model on a closed chain of 4 sites with 4 electrons, zero spin, and U=2V) sparsediag program returns only one eigenstate for each multiplet. How other eigenstates can be obtained if there is no quantum number differentiating them?

Thanks, Andriy