Claude Fable 5 解决理论物理难题，教授称其理解弦论

We are entering a completely new era of science.

Yuji Tachikawa, a University of Tokyo professor working on quantum field theory and string theory, says Claude Fable 5 unlocked a collaborative research problem that had seen no progress for six months.

Tachikawa gave it his research notes on a whim. Fable found a calculation error, reached the same dead end as the researchers, and then expanded another approach after a follow-up prompt.

Tachikawa: “It made a non-trivial observation and essentially solved it.”

The model also used SymPy to write code and verify its own predictions. His conclusion:

“Fable probably seems like it properly understands string theory and has intuition too.” This is one researcher’s account, not a published or independently verified result. But it describes something far more consequential than another benchmark gain: a frontier model contributing a novel step to active theoretical physics research.

I love it!