Particle phenomena in terms of algebraic and group-theoretical methods; mathematics of quantum physics.

Computational materials science; solid state physics.

Field theory of strong; weak and electromagnetic interactions; astrophysical implications

High energy theory; mathematical physics; string theory

Quantum field theory, String Theory, Quantum Cosmology

Ultrafast nonlinear spectroscopy in condensed matter; quantum dynamics and control in nanostructures; experimentalist.

Condensed matter theory

General relativity and cosmology; kinetic theory; black hole physics; gravitational radiation; lead PI on Binary Black Hole Grand Challenge.

Cosmology, Quantum Field Theory, and String Theory

Experimental atom optics

Quantum chaos; transport theory; nonlinear dynamics; nonequilibrium statistical physics; stochastic theory

Particle physics; unification of fundamental interactions; cosmology