Understanding the universe

We are working on understanding the most fundamental problems pertaining to our understanding of the universe; the origin of the universe, the evolution of the universe, the matter contents, and the forces which govern the universe.

The known matter and radiation, as we know it from the periodic table and electromagnetic radiation, only make up about 5% of the universe's energy density. The remaining 95 % is in the form of dark matter and dark energy. We do not have a firm understanding of what dark energy and dark matter are and their origin. However, from its gravitational effect on the visible matter, we know this dark sector of dark energy and Dark matter exists and makes up most of the energy density in the universe. To understand our universe, we want to understand the dark sector.

Inflation is considered the most successful paradigm for the universe's origin from Big Bang, but the underlying theory of inflation is still poorly understood. Much of our work also focuses on understanding the theory of inflation and minimal extensions/alternatives.

Our methods include developing new quantum field theory approaches and particle physics models and testing those against data from particle physics, astroparticle physics, cosmological and astrophysical experiments, and observations.