Presentations:

Superluminal signals in k-essence cosmology (CASP, October 2008, Ann Arbor, USA)

Vector Inflation (COSMO 08, September 2008, Madison, WI, USA)

Vector inflation and cosmological perturbations (August 2008, Tufts, USA)

Vector Inflation (July 2008, Wuerzburg, Germany)

Cosmic string loops: large or small? (March 2008, Barcelona, Spain)

The problem of measure in Cosmology (Initial Conditions in Cosmology, September, 2007, Wuerzburg, Germany)

Numerical search for fundamental theory (2007 Inaugural FQXi Conference, July, 2007, Reykjavik, Iceland)

Random observations in the landscape (Origins of Dark Energy, May, 2007, Perimeter, Canada)

Random observers in the landscape (String Seminar, May, 2007, Berkeley, USA)

Random observers in the landscape (SITP Seminar, April, 2007, Stanford, USA)

Random observers in the landscape (Thursday Cosmolgy Seminar, April, 2007, Tufts, USA)

Exact cosmic string network simulations (COSLAB 2006, Sep, 2006, Leiden, Netherlands)

New Cosmic String Simulations and their Implications (Joint Tufts-Harvard-MIT Seminar, April, 2006, MIT, USA)

Scaling of cosmic string loops (9th EASTERN GRAVITY MEETING, March, 2006, MIT, USA)

Evolution of cosmic strings (APS Meeting, April, 2005, Tampa, FL, USA)