This feature is not yet supported in set_pair_coupling!. This full solution, for general biquadratic interactions, would require to introduce new symbolic spin variables for pairs of sites (extending our use of DynamicPolynomials). As a workaround, we should get the special case of scalar biquadratic (temporarily) working again as a biquad keyword argument to set_exchange!. A low level function call is:
This feature is not yet supported in
set_pair_coupling!. This full solution, for general biquadratic interactions, would require to introduce new symbolic spin variables for pairs of sites (extending our use of DynamicPolynomials). As a workaround, we should get the special case of scalar biquadratic (temporarily) working again as abiquadkeyword argument toset_exchange!. A low level function call is: