Bosonic check: U(1) current net agrees

Status: numerical — measured, with an error bar and a convergence order; not a theorem.

Area: Theorem B: universality for diffeomorphism-covariant nets · Card type: result · Knowledge-base id: boson-check

Statement

U(1) current net (c = 1): modular-frame symbol pi kappa coth(pi kappa); f2 = 0.00844(2) and s2 = 0.083(2) against 0.0084434 and 0.083333. c-linearity of the vacuum overlap proved analytically at second order: boson and fermion both give (s^2/96 pi^2) int k^3 |g-hat|^2.

How to verify

numerics/boson/boson_recovery.out.

Evidence

• numerics/boson/boson_recovery.py — numerics
• numerics/boson/check_forms.py — numerics

Related claims

None recorded.

Review

Review record: passed 2026-09-23 by REF-DEP-CFT-B1.

The referee's report and the card's event log stay in the private knowledge base; only the verdict, the date and the referee are published here.

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