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Arrays of artificial spin ices exhibit reconfigurable ferromagnetic resonancefrequencies that can be leveraged and designed for potentialapplications.However, analytical and numerical studies of the frequencyresponse of artificial spin ices have remained somewhat limited due to the needof take into account nonlocal dipole fields in theoretical calculations or bylong computation times in micromagnetic simulations. Here, we introduceGaenice, a framework to compute magnon dispersion relations of arbitraryartificial spin ice configurations. Gaenice makes use of a tight-bindingapproach to compute the magnon bands. It also provides the user completecontrol of the interaction terms included, e.g., external field, anisotropy,exchange, and dipole, making it useful also to compute ferromagnetic resonancesfor a variety of structures, such as multilayers and ensembles of weakly ornon-interacting nanoparticles. Because it relies on a semi-analytical model,Gaenice is computationally inexpensive and efficient, making it an attractivetool for the exploration of large parameter spaces.

G\ae{}nice: a general model for magnon band structure of artificial spin ices