454 citations · 5.9k across the 78 of their papers we have counts for
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A parametrisation of modified gravity on nonlinear cosmological scales
Lucas Lombriser
Viable modifications of gravity on cosmological scales predominantly rely on screening mechanisms to recover Einstein's Theory of General Relativity in the Solar System, where it h…
Cluster abundance in chameleon gravity I: toward an accurate halo mass function prediction
Matteo Cataneo, David Rapetti, Lucas Lombriser +1
We refine the mass and environment dependent spherical collapse model of chameleon gravity by calibrating a phenomenological correction inspired by the parameterized post-Fr…
Constraints on decaying early modified gravity from cosmological observations
Nelson A. Lima, Vanessa Smer-Barreto, Lucas Lombriser
Most of the information on our cosmos stems from either late-time observations or the imprint of early-time inhomogeneities on the cosmic microwave background. We explore to what e…
Challenges to Self-Acceleration in Modified Gravity from Gravitational Waves and Large-Scale Structure
Lucas Lombriser, Nelson A. Lima
With the advent of gravitational-wave astronomy marked by the aLIGO GW150914 and GW151226 observations, a measurement of the cosmological speed of gravity will likely soon be reali…
Accurate halo-model matter power spectra with dark energy, massive neutrinos and modified gravitational forces
Alexander Mead, Catherine Heymans, Lucas Lombriser +3
We present an accurate non-linear matter power spectrum prediction scheme for a variety of extensions to the standard cosmological paradigm, which uses the tuned halo model previou…
Dark Energy vs. Modified Gravity
Austin Joyce, Lucas Lombriser, Fabian Schmidt
Understanding the reason for the observed accelerated expansion of the Universe represents one of the fundamental open questions in physics. In cosmology, a classification has emer…