factual

Supersymmetric compactifications cannot be our universe

The best-understood string compactifications (e.g. on a six-torus or Calabi-Yau manifolds) automatically preserve supersymmetry and yield stable, static solutions, but because our low-energy universe does not exhibit supersymmetry, these well-controlled solutions cannot describe our universe.

factualpending

Speaker

Cumrun Vafa

Evidence Quote

which has symmetry, which certainly we don't see in our universe at Low energy called supersymmetry... This supers symmetry is, which automatically follows from the example I told you, but it's not enjoyed in low energy at our universe. So therefore it cannot be our universe.

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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