You can find most of my publications here: Inspire-HEP and NASA(ADS)


I want to understand how the universe first got populated with particles during the hot big bang (reheating after inflation), explore the rich nonlinear dynamics during this phase and figure out the observational consequences of this fascinating period in our universe's infancy. I also delve into more astrophysical problems including dark matter/dark energy, gravitational waves and exoplanets. On the mathematical side, I am fascinated by solitons, their interactions  and their relevance to cosmology.

I tend to get really excited about teaching and public outreach.


Some of my talks can be found here. Here are the slides from some recent talks

  • Inflation Ends, What's Next ? (download)
    Colloquium at the University of Texas at Dallas 2017
  • When Neutron Stars Collide (download)
    Informal talk at Rice about the first neutron star merger 2017
  • Inflation Ends, What's Next ? (download)
    Short talk at MIT celebrating Alan Guth's 70th birthday 2017
  • Nonlinear Dynamics of Cosmological Scalar Fields (download)
    Talk at the Post-Inflationary Workshop in Bologna, Italy 2017
  • How did the Hot Big Bang Begin ? (2016): slides
  • Wires to Cosmology (2016) slides.
  • Seeing the Invisible: Dark Matter and Dark Energy (2016): slides [public talk]


I am currently teaching a graduate course An Introduction to Quantum Field Theory at Rice. In the recent past, I have taught Galaxies and Cosmology (Spring 2017).  My past experience can be found here

Academic History

Cosmology Group at Rice