Toric mirrors and test configurations

Abstract: We prove a result that relates Donaldson-Futaki type invariants (that is, the numerical invariants used to define $K$-stability for general polarised manifolds) for a toric polarised manifold and for a compactification of its mirror Landau-Ginzburg model, nearby the large volume limit. In general, this expansion contains a term involving the base loci of certain linear systems determined by the Landau-Ginzburg potential (as expected from known constructions of compactified mirrors), and we give a condition under which this term is subleading.