# Benjamin L’Huillier(벤자민)

Cosmologist and Astrophysicist, Research Fellow at KASI, Daejeon, South Korea

## Research Interests

My research focuses on structure formation using numerical simulations, from galaxies to the large scale structures. I am interested in cosmological structure formation and in the interplay between galaxies and their environment. For this purpose, I mostly use the GOTPM and Gadget-3 TreePM codes. We recently performed the Horizon Run 4 simulation, using $6300^3$ particles in a $3150\,h^{-1}\,\mathrm{Mpc}$ box in order to study galaxy evolution in the cosmic web.

During my PhD, I have studied the role of gas accretion on galaxy formation, using multi-zoom simulations from Sémelin & Combes (2005) run in the framework of the French Horizon Project (that is completely unrelated to the Horizon Runs).

My research interests include:

• Dark energy and dark matter
• Early Universe
• Cosmology: expansion history, isotropy
• Time-domain cosmology
• The large-scale structures of the Universe
• Galaxy formation in their environment: mass assembly, mergers, accretion, alignment
• Methods: Cosmological simulations, structure finding, reconstruction algorithms, non-parametric approaches
• Beyond the concordance model: modified gravity, ...

## Here are some projects I am working on

• Cosmological Simulations

• Galaxy evolution

• Cosmology