forecast

String theory predicts our universe cannot be stable

All known non-supersymmetric string solutions fail to be exactly stable, so breaking supersymmetry puts you in a regime where no stable static universe is expected; Vafa frames this as a prediction of string theory—that a universe like ours cannot be stable.

forecastpending

Speaker

Cumrun Vafa

Evidence Quote

essentially all the solutions, well, not essentially, exactly all the solutions we know in string theory, which don't enjoy supersymmetry are not exactly stable. In fact, that's in some sense I would say a prediction of string theory. String theory tells you our universe cannot be stable.

Source

277 | Cumrun Vafa on the Universe According to String TheorySean Carroll's Mindscape
Created: 6/13/2026, 12:07:45 AM

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