Matthew Kleban

Matthew Benjamin Kleban is an American theoretical physicist who works on string theory and theoretical cosmology. He is a professor of physics at New York University, director of the Center for Cosmology and Particle Physics, and a former member of the Institute for Advanced Study. His contributions to physics include:

• The discovery of the first distinct signature of the black hole singularity in AdS/CFT (with Lukasz Fidkowski, Veronika Hubeny and Stephen Shenker)
• Pioneering work on the subtleties of very late-time cosmology in the presence of a positive cosmological constant, and the "Boltzmann brain" problem (with Lisa Dyson and Leonard Susskind)
• A determination of the effects of cosmic bubble collisions on the microwave background radiation and other cosmological observables.

• Fidkowski, Lukasz; Hubeny, Veronika; Kleban, Matthew; Shenker, Stephen (6 February 2004). "The Black Hole Singularity in AdS/CFT". Journal of High Energy Physics. 2004 (2). arXiv:hep-th/0306170. Bibcode:2004JHEP...02..014F. doi:10.1088/1126-6708/2004/02/014.