Igor Klebanov

Published in 2000 by Igor Klebanov and Matthew Strassler, the Klebanov-Strassler solution describes a string-theory geometry in which a conifold singularity is smoothed out by fluxes, producing a confining gauge theory. It became a foundational example in the AdS/CFT correspondence, showing how a duality cascade of gauge groups resolves naked singularities.

Klebanov is a professor of theoretical physics at Princeton University, where he has been a central figure in string theory research for decades. He is also associated with the Princeton Center for Theoretical Science and has collaborated with researchers at the nearby Institute for Advanced Study.

Gauge-string duality, also known as the AdS/CFT correspondence, proposes that certain quantum field theories are mathematically equivalent to string theories in higher-dimensional curved spacetime. Klebanov extended the original Maldacena conjecture beyond conformal theories to include non-conformal cases, including the duality cascade mechanism that connects cascading gauge theories to flux-through-throat geometries.

Klebanov was elected to the American Academy of Arts and Sciences and is a fellow of the American Physical Society. His Klebanov-Strassler paper remains one of the most highly cited works in string theory literature and has influenced research on holographic QCD and the gauge-gravity dictionary.