I am sorry, but I did not understand your comment regarding setting parameter COMPLEX. Did you mean to change something in parameter’s file? Not two write, "tl0=exp(-I/4); tr0=exp(I/4);" but to set parameters in a different way?
Thank you in advance!
Do you want to use this with an ED or DMRG code> If so, have you tried setting the parameter COMPLEX ?
Matthias