TeNPy Forum

hi, self.add_multi_coupling(-tc, [( "Bd", 0, 0), ("B", 0, 1), ("N", 1, 1)]) self.add_multi_coupling(-tc, [( "Bd", 0, 1), ("B", 0, 0), ("N", 1, 0)]) these are the terms that I wish to use, but this is giving the error of "poorly conditi...