Matthew Kleban

Nationality| United States
Alma mater| Reed College (BA)

University of California, Berkeley (MA)

Stanford University (PhD)
Known for| String theory
Cosmology
Scientific career
Fields| Theoretical physics
Institutions| New York University
Institute for Advanced Study
Doctoral advisor| Stephen Shenker

Matthew Benjamin Kleban is an United States 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.
* Work on the fundamental origin of cosmic inflation.

## Selected works

* 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). doi:10.1088/1126-6708/2004/02/014. Bibcode: 2004JHEP...02..014F.

## References

* Astronomy magazine cover story on observational signals of the multiverse
* Physics World article on bubble collisions
* Discover Magazine profile of Kleban

## External links

* Home page of Matthew Kleban at New York University
* Home page of the Center for Cosmology and Particle Physics

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