Based on the abstracts of my recent publications: http://www.wordle.net
I'm a physicist with a background in nonlinear dynamics and complex systems, my main research interests are:
- Dynamical processes and statistical properties of natural language, including language change, spreading of linguistic inovations, burstiness of words.
- Analysis of extreme events in social systems including its dynamical origins, recurrence properties, prediction, and reactions.
- Chaos in Hamiltonian systems, including billiards, stickiness in systems with mixed phase space, Poincare recurrence time, and optical cavities. A visual introduction to some of this topic you can find at: Visualization of dynamical systems: Billiards |Recurrences
See also my list of publications.