| Speaker: |
Minkyoo Kim (Seoul National University) |
| Title: |
UV completion of 2D Ising CFT: a golden E8 massless S-matrix |
| Date (JST): |
Tue, Aug 04, 2026, 13:30 - 15:00 |
| Place: |
Seminar Room A |
| Abstract: |
We present a full classification of UV complete QFTs that RG flow to the 2D Ising CFT by solving the bootstrap equations for massless right--left S-matrices. For the Ising model with E8 spectrum, we find exactly four completions, arising from higher-TTbar-type deformations, including a previously unknown ``golden flow'' whose UV fixed point is a diagonal su(2) coset CFT (c=25/14) along \Delta_{rel}=2/7. A universal Fibonacci/ E8 structure governs the R--L adjacency matrices and the Y-system periods, so that the E8 symmetry persists across all RG scales.
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