# Gerardus t Hooft

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**Gerardus ("Gerard") 't Hooft** [ut-hooft] (The prefix ’t is pronounced as ‘ut’ and stands for ‘het’) (born July 5, 1946) is a professor in theoretical physics at Utrecht University, The Netherlands. He is a 1999 Nobel Prize laureate "for elucidating the quantum structure of electroweak interactions in physics". Asteroid 9491 Thooft is named in his honor; he has written a constitution for its future inhabitants.

## Important discoveries

- A proof that gauge theories are renormalizable
- Other results about gauge theory, confinement, and anomalies
- The topological expansion of large gauge theories that was recently proved important in the AdS/CFT correspondence in string theory
- 't Hooft magnetic loop (related to Wilson loop by S-duality)
- Instanton contributions to interactions of fermions ('t Hooft interaction)
- Holographic principle (with Lenny Susskind) and other proposals about quantum gravity
- Recent attempts to revive hidden variables in quantum mechanics

## See also

## External links

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