Hugh David Politzer
active c. 1949, New York City, United States
American theoretical physicist who independently discovered the asymptotic freedom of gauge theory in 1973 as a Harvard graduate student.
Politzer graduated from the University of Michigan and earned his PhD at Harvard in 1974 under Sidney Coleman. His first paper — published in the same issue of Physical Review Letters as Gross–Wilczek — is among the greatest discoveries ever made by a graduate student.
He moved to Caltech as a postdoc and stayed as professor, working on quantum chromodynamics, dynamical symmetry breaking, and strong-interaction phenomenology. He shared the 2004 Nobel Prize in Physics with Gross and Wilczek.
Nobel-winning work
As a fourth-year graduate student at Harvard, Politzer independently recomputed the β function of Yang–Mills theory — the problem Gross and Wilczek had just solved at Princeton. His result (summer 1973) was identical: in non-Abelian gauge theory, quantum-vacuum 'anti-screening' makes the coupling fall at high frequency — asymptotic freedom.
His paper 'Reliable Perturbative Results for Strong Interactions?' showed that QCD permits trustworthy perturbative calculation at high energy, opening the whole science of quantitative tests of the strong force — from e⁺e⁻ cross sections to parton distributions at the LHC. The 2004 Nobel recognized the simultaneous Princeton and Harvard discoveries.
Workplaces: California Institute of Technology (Caltech), Harvard University
United States