Large Scale Structure of the Universe

13 billion years ago the Universe was hot and homogeneous to a very high degree. Since then it has cooled down to T = 2.7K, expanded by a factor of 10, and because of the gravitational attraction developed a lot of structure. Structure formation is a very complicated nonlinear process that can be studied analytically on large scales but requires high resolution N-body simulations on smaller scales.

The nonlinear structure formation is a fascinating subject to study on its own merits. As a bonus, it can provide inside into two biggest mysteries of modern science: dark energy and dark matter. The amount and exact nature of dark energy (and dark matter) in the Universe affects structure formation. By observing the distribution of matter at different times we hope to measure properties of dark energy and dark matter with a very high precision.

My current active research interests are currently focused around using the large scale structure of the Universe to study dark energy and dark matter. More specifically:

• Using higher order clustering information as a cosmological probe

• Modelling small scale clustering with simulations

• Making sure the classic BAO and RSD techniques are robust at a sub-percent level.

I and my students and postdocs have quite a few interesting publications on this subjects you may want to check out.

I am also involved in a number of high profile experiments.