I checked the ratio of your real and imaginary part and it appears to be about -15. If your eigenvalues are real and x_r is the real eigenvector then x_r + (i * c x_r) is also an eigenvector corresponding to the same real eigenvalue. You may just discard the imaginary part.
A(x_r + (i *c*x_r) ) = w(x_r + ic_r) -Nachiket -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.mcs.anl.gov/pipermail/petsc-users/attachments/20130415/0c9f0743/attachment.html>
