  A Hubble-induced phase transition is a natural spontaneous symmetry breaking
mechanism allowing for explosive particle production in non-oscillatory models
of inflation involving non-minimally coupled spectator fields. In this work, we
perform a comprehensive characterisation of this type of transitions as a
tachyonic Ricci-heating mechanism, significantly extending previous results in
the literature. By performing $\mathcal{O}(100)$ 3+1-dimensional classical
lattice simulations, we explore the parameter space of two exemplary scenarios,
numerically determining the main timescales in the process. Based on these
results, we formulate a set of parametric equations that offer a practical
approach for determining the efficiency of the heating process, the temperature
at the onset of radiation domination, and the minimum number of e-folds of
inflation needed to resolve the flatness and horizon problems in specific
quintessential inflation scenarios. These parametric equations eliminate the
need for additional lattice simulations, providing a convenient and efficient
method for evaluating these key quantities.
