We present the public version of hi_class (www. hiclass-code. net), an extension of the
Boltzmann code CLASS to a broad ensemble of modifications to general relativity. In …

We address the impact of consistent modifications of gravity on the largest observable
scales, focusing on relativistic effects in galaxy number counts and the cross-correlation …

We present a turnkey solution, ready for implementation in numerical codes, for the study of
linear structure formation in general scalar-tensor models involving a single universally …

We compare Einstein-Boltzmann solvers that include modifications to general relativity and
find that, for a wide range of models and parameters, they agree to a high level of precision …

Phenomenological functions Σ and μ (also known as G light/G and G matter/G) are
commonly used to parametrize possible modifications of the Poisson equation relating the …

The most general covariant action describing gravity coupled to a scalar field with only
second order equations of motion, Horndeski's theory (also known as``Generalized …

We show that very general scalar-tensor theories of gravity (including, eg, Horndeski
models) are generically invariant under disformal transformations. However there is a …

There has been substantial interest in modifications of the standard Λ cold dark matter (Λ
CDM, where Λ is the cosmological constant) cosmological model prompted by tensions …

We present constraints on Horndeski gravity from a combined analysis of cosmic shear,
galaxy–galaxy lensing and galaxy clustering from of the Kilo-Degree Survey and the Galaxy …

Attempts at constraining theories of late time accelerated expansion often assume broad
priors for the parameters in their phenomenological description. Focusing on shift-symmetric …