Kinetic Field Theory applied to Vector-Tensor Gravity

Understand

The formation of cosmic structures is an important diagnostic for both the dynamics of the cosmological model and the underlying theory of gravity.

• At the linear level of these structures, certain degeneracies remain between different cosmological models and alternative gravity theories.
• It is thus indispensable to study the non-linear, late-time evolution of cosmic structures to try and disentangle their fundamental properties caused by the cosmological model or gravity theory itself.
• Conventionally, non-linear cosmic structure formation is studied by means of computationally expensive numerical simulations.