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ExampleConstruction: AI-adaptedVerification: AI-generatedPipeline-generatedprecheck passverified 2026-10-22 (gpt-6.1-sol)
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Wave energy and black-hole perturbation interfaces — model 1

Physical scope

A conditional scalar mode-trace calculation of the stationary Kerr horizon flux sign; it proves no global scattering or amplification result.

Example

Let 0<∣a∣<M and let ΩH≠0 be the Kerr horizon angular velocity. Choose an integer m with mΩH>0 and set ω=mΩH/2. Conditional on a nonzero smooth scalar horizon mode trace u on an open mode domain P with these parameters, and on a smooth real scalar field ψ defined on a neighborhood of P in the regular extension with ψ∣P=Re⁡u, at each point whose full stationary integral-curve segment of length 2π/ω remains in P its shifted horizon frequency is ω~=−mΩH/2<0 and its time-averaged stationary horizon flux density is nonpositive, is zero at trace nodes, and is strictly negative wherever the trace is nonzero. On every compact smooth spacelike cut patch D whose full stationary integral-curve segments remain in the mode domain and which meets its nonzero set, its integrated averaged flux is FD=−(mΩH)2∫D∣u∣2dμD/8<0. This is the local mode-trace sign calculation in the superradiant frequency range. It does not construct a global wave solution or establish a scattering amplification factor.

Facts & Assumptions

Given: The Kerr parameters and a nonzero smooth mode trace with mΩH>0 and ω=mΩH/2.

[F1]

Kerr horizon mode and shifted horizon frequency: ω~=ω−mΩH for a smooth joint mode of T and Φ.

[F2]

Time-averaged stationary flux of a Kerr horizon mode: for a nonzero smooth mode trace with ω>0, the averaged stationary horizon flux density is 12ωω~∣u∣2.

[A1]

ACω is the only choice principle inherited through the Kerr horizon definitions (The Axiom of Countable Choice (ACω)).

[A2]

A nonzero smooth horizon mode trace with these parameters is assumed for this example, together with a smooth real scalar field ψ on a neighborhood of its mode domain whose restriction is Re⁡u. For each compact cut patch D used below, its mode domain contains the full stationary integral-curve segment of length 2π/ω from every point of D; this item does not establish the trace's existence as a global solution of □gψ=0.

Verification

1.1givenA1A2F1algebra

The chosen frequency satisfies ω=mΩH/2>0 and ω~=ω−mΩH=−mΩH/2<0.

2.1givenA2F2step 1.1algebra

The horizon-flux identity [F2] gives ⟨Q(χ,T)⟩T=12ωω~∣u∣2=−(mΩH)2∣u∣2/8. This is nonpositive at every point, zero at nodes and strictly negative where u≠0; being a nonzero mode does not exclude nodes.

3.1givenA2F2step 2.1algebra∎

For a compact smooth spacelike cut patch D whose stationary integral-curve segments remain in the mode domain and which meets the nonzero set, [F2] proves ∫D∣u∣2dμD>0 and finiteness of that integral. Integrating step 2.1 therefore gives FD=−(mΩH)2∫D∣u∣2dμD/8<0. At any nonzero mode point whose full period integral-curve segment remains in the mode domain, such a sufficiently small patch is supplied by the local cut construction in [F2]. The conclusion remains conditional on the given trace, without a global wave or scattering existence claim.

Depends on

Dependency tree · 2 levels

Sources