Dear Emanuele,
That is no problem. You will need to add a bond of that distance to the unit cell, and can then assign a coupling to it.
Matthias
On Nov 26, 2012, at 5:30 AM, Emanuele Levi emanuele.levi@gmail.com wrote:
Dear ALPS developers, does ALPS ( and in particular the DMRG solver) support spin Hamiltonians with non-next interacting terms, e.g. Sz(i)Sz(i+3)? Many thanks.
Kindest regards.
-- Emanuele Levi
emanuele.levi@gmail.com