Structure of K\"ahler potential for D-term inflationary attractor models
  Minimal chaotic models of D-term inflation predicts too large primordial
tensor perturbations. Although it can be made consistent with observations
utilizing higher order terms in the K\"ahler potential, expansion is not
controlled in the absence of symmetries. We comprehensively study the
conditions of K\"ahler potential for D-term plateau-type potentials and discuss
its symmetry. They include the alpha-attractor model with a massive vector
supermultiplet and its generalization leading to pole inflation of arbitrary
order. We extend the models so that it can describe Coulomb phase, gauge
anomaly is cancelled, and fields other than inflaton are stabilized during
inflation. We also point out a generic issue for large-field D-term inflation
that the masses of the non-inflaton fields tend to exceed the Planck scale.
