Parent: #650. Retrieval-only.
Why
#710 notes that ∂_p M_{4,m}(q_4) contains m λ_*^m from two simple Perron branches crossing; the block is semisimple. Toy: diag(λ+ε,λ-ε) yields 2m λ^{m-1} without a Jordan block. #275 treats m λ^m in a thermal jet as possible LCFT/Jordan evidence. Need the published status of that inference.
Deliverable
notes/lit-thermal-jet-jordan-YYYYMMDD.md as a draft PR against main. No STATUS. Do not merge.
Questions
- Papers that identify logarithmic CFT / Jordan blocks from a factor
L, m, or log in a derivative or scaling function of 2D percolation/Potts (LCFT reviews: Gurarie, Cardy, Vasseur, Ridout, …). Quote the actual diagnostic, not the slogan.
- Papers that warn that eigenvalue crossings, avoided crossings, or parameter derivatives produce
m λ^{m-1} without a nontrivial Jordan form of the transfer matrix.
- Finite-size matching/wrapping papers (Mertens–Ziff, Jacobsen) — do they interpret the
1/m in ρ^m/m displacement as Jordan?
- Kato perturbation of simple vs non-simple eigenvalues: textbook theorem that a split pair of simple eigenvalues gives
m λ^{m-1} in the difference's derivative.
PRIMARY_TEXT_READ / ABSTRACT_ONLY / [LIT]. Tripwire: at least one PRIMARY LCFT diagnostic paper and one PRIMARY or textbook source for the semisimple crossing. Do not declare #275 solved.
Wait for ASSIGNED_MACHINE.
Parent: #650. Retrieval-only.
Why
#710 notes that
∂_p M_{4,m}(q_4)containsm λ_*^mfrom two simple Perron branches crossing; the block is semisimple. Toy:diag(λ+ε,λ-ε)yields2m λ^{m-1}without a Jordan block. #275 treatsm λ^min a thermal jet as possible LCFT/Jordan evidence. Need the published status of that inference.Deliverable
notes/lit-thermal-jet-jordan-YYYYMMDD.mdas a draft PR against main. No STATUS. Do not merge.Questions
L,m, orlogin a derivative or scaling function of 2D percolation/Potts (LCFT reviews: Gurarie, Cardy, Vasseur, Ridout, …). Quote the actual diagnostic, not the slogan.m λ^{m-1}without a nontrivial Jordan form of the transfer matrix.1/minρ^m/mdisplacement as Jordan?m λ^{m-1}in the difference's derivative.PRIMARY_TEXT_READ / ABSTRACT_ONLY / [LIT]. Tripwire: at least one PRIMARY LCFT diagnostic paper and one PRIMARY or textbook source for the semisimple crossing. Do not declare #275 solved.
Wait for ASSIGNED_MACHINE.