What Is the Value, Anyway?

Li Dong asked after hearing Lin Yi's explanation.

"So what you mean is... if we want to continue raising the operating temperature range of nickel-based superconducting materials, we need a nonperturbative method that can accurately calculate collective fluctuations under strong coupling, right?"

"Yes, Teacher. Ever since you found the generalized criterion for superconducting materials, I've already solved most of the problem of superconducting electron pairing."

"But if we want to keep raising the temperature, the approximation methods we used before won't work anymore."

Hearing this, Li Dong understood.

It seemed that he had no choice but to tackle the Yang–Mills Existence and Mass Gap problem.

There might be other ways to solve the computational problem Lin Yi had mentioned.

But where were those methods? And where should he start looking? He no longer had the time to search from scratch.

So, for him, the simplest and most direct solution was to solve the Yang–Mills Existence and Mass Gap problem outright.

At that thought, Li Dong suddenly laughed.

"Mr. Yang, I'll give this problem of yours a try."

Afterward, Li Dong chatted with Lin Yi for a couple more minutes about the parameter values in the material model, then hung up.

After ending the call, he took a stack of draft paper from the drawer.

He placed it properly on the desk, like a student about to work on an exam his teacher had assigned.

He picked up his pen and wrote down the Yang–Mills Equations and the expression for the field tensor.

[μfμν＝0]

[fμν＝?μaν-?νaμ＋[aμ,aν]]

Among the seven Millennium Problems, this one was indeed rather special.

In 1954, Mr. Yang and Mills proposed the non-Abelian gauge field theory.

That theory later became the foundation of the Standard Model of particle physics.

Physicists had actually begun using it long ago