1.3k citations · 18k across the 232 of their papers we have counts for
13 papers · 1 filter
Halos and Voids in f(R) Gravity
Baojiu Li, Gong-Bo Zhao, Kazuya Koyama
In this paper, we study the distribution of dark matter halos and voids using high resolution simulations in f(R) gravity models with the chameleon mechanism to screen the fifth fo…
Weak lensing predictions for coupled dark energy cosmologies at non-linear scales
Emma Beynon, Marco Baldi, David J. Bacon +2
We present non-linear weak lensing predictions for coupled dark energy models using the CoDECS simulations. We calculate the shear correlation function and error covariance expecte…
Cosmological tests of General Relativity: a principal component analysis
Alireza Hojjati, Gong-Bo Zhao, Levon Pogosian +3
The next generation of weak lensing surveys will trace the evolution of matter perturbations and gravitational potentials from the matter dominated epoch until today. Along with co…
The Self-Accelerating Universe with Vectors in Massive Gravity
Kazuya Koyama, Gustavo Niz, Gianmassimo Tasinato
We explore the possibility of realising self-accelerated expansion of the Universe taking into account the vector components of a massive graviton. The effective action in the deco…
ECOSMOG: An Efficient Code for Simulating Modified Gravity
Baojiu Li, Gong-Bo Zhao, Romain Teyssier +1
We introduce a new code, ECOSMOG, to run N-body simulations for a wide class of modified gravity and dynamical dark energy theories. These theories generally have one or more new d…
Interacting Dark Energy -- constraints and degeneracies
Timothy Clemson, Kazuya Koyama, Gong-Bo Zhao +2
In standard cosmologies, dark energy interacts only gravitationally with dark matter. There could be a non-gravitational interaction in the dark sector, leading to changes in the e…