Professor Brian Caro's Invitation

Professor Brian Caro's paper caused a sensation across academia.

People had long assumed Professor Lu would be the one to solve the Mass Gap problem, but the outcome was a complete upset.

The final question of the Yang–Mills Equations Millennium Problem had been solved by a professor at the University of Oxford.

Of course, no one found Professor Brian Caro's claim all that surprising. He was a heavyweight in theoretical physics who had spent over twenty years studying Gauge Field Theory. A breakthrough like this was well within his reach.

Professor Lu's recent solution to the general Yang–Mills Equations had also clearly inspired researchers in both physics and Mathematics.

Professor Brian Caro and the University of Oxford became famous throughout theoretical physics almost overnight, while the flood of papers on the Yang–Mills Equations Mass Gap problem on arXiv dwindled.

Everyone was waiting for a verdict.

They were waiting to see how the physics community would respond to the paper.

They were waiting for leading scholars to make their opinions public...

At the University of Oxford.

Professor Brian Caro sat on a sofa in a study lined on both sides with mahogany bookshelves. As he gave an interview to Nature, his face glowed with confidence.

When asked about the Mass Gap problem that had troubled theoretical physicists for decades, he leaned back against a soft cushion and answered with practiced ease.

"The Mass Gap is a very complicated problem. We've long been able to observe it in physics experiments and computer simulations, but we couldn't explain it in mathematically sound terms or understand, qualitatively and quantitatively, why it exists. It has troubled physicists for over half a century. Like a marathon, it has only now reached the finish line."

Belinda, a reporter for Nature's scientist profiles, held her recorder and asked