David J. Gross, the UC Santa Barbara physicist who helped crack one of the hardest problems in modern physics, has been named a winner of the 2026 Special Breakthrough Prize in Fundamental Physics.
The Breakthrough Prize Foundation said Gross was recognized for a lifetime of groundbreaking contributions to theoretical physics, from the strong force to string theory, and for tireless advocacy for basic science worldwide. He won the 2004 Nobel Prize in Physics and has been a leading figure in fundamental physics for six decades.
Gross’s award lands in a year when the foundation handed out six Breakthrough Prizes worth $3 million each, recognized 15 early-career physicists and mathematicians with six New Horizons Prizes of $100,000 each, and gave three women mathematicians who recently completed PhDs Maryam Mirzakhani New Frontiers Prizes of $50,000. The total prize money this year is $18.75 million.
His best-known work dates to 1973, when Gross and his graduate student Frank Wilczek, working separately from David Politzer, solved a gap in quantum field theory involving the strong nuclear force. They showed that the strong force gets weaker as particles approach each other and stronger as they move apart, a result that explained why quarks can never be observed in isolation and opened the way for quantum chromodynamics, the theory that became the final foundation stone of the Standard Model of particle physics.
The award also reflects a career that went far beyond one breakthrough. Gross and his collaborators developed a simplified quantum field theory that helped explain how particles can acquire mass, and they worked on theoretical approaches to unifying all fundamental forces, including gravity, in heterotic string theory. He also served as director of the Kavli Institute for Theoretical Physics, president of the American Physical Society, helped establish physics institutes in India, China and South America, and directed the Jerusalem Winter School in Theoretical Physics.
The prize foundation said this year’s laureates, in the words of Mark Zuckerberg and Dr. Priscilla Chan, show what great science can do by deepening understanding of the world and leading to discoveries that improve millions of lives. Yuri Milner said they are building a cathedral of knowledge on foundations laid down by the giants who came before them, and that civilization owes its future to them.
Gross’s recognition also points to the scale of the prize program itself. The foundation said the 2026 awards are part of the 14th year of the Breakthrough Prizes, and that the total amount conferred over 15 years is now more than $340 million. For Gross, the honor is another marker on a career that changed the way physics understands the strong force and still shapes the field today.
