Dear ALPS community, As my first attempt to use the TEBD code provided in alps-2.0, I ran a tutorial concerning the simulation of the XX spin chain (tutorial_2a.py), which simulates the dynamics starting from a domain wall spin configuration: http://alps.comp-phys.org/mediawiki/index.php/ALPS_2_Tutorials:TEBD-02_kink I got the following figures (attached .png files). The Wiki says "We see that the magnetization agrees very well to visual accuracy", but in the plot I obtained, it is not quite the case (very "noisy"). I played a bit with some parameters (increasing the number of time steps and the max Schmidt dimension), but it still get some ugly curves. So, I suspect that something might we wrong... Any help or suggestion would be very much appreciated ! Gregoire Misguich.
