USR-2026-0021 · CMB

No scar from a collision with another universe

No bubble-collision signature in the CMB: global p = 0.903 (0.0σ); the best local candidate is a cold disk of radius 10° at (214°, -27°) with local S/N 2.6, and the Cold Spot itself scores only 1.7.

PROVISIONAL null — p = 0.903 (0.0σ) re-run & confirmed 2026-07-09 (R0 — David Thompson's CI; independence pending)

A disk-profile matched search for bubble-collision imprints comes back globally null. The most interesting local candidate is logged for completeness, below any evidential threshold.

Falsify-box — how to kill this claim

UNTESTED Any matched-filter search using the same Chang-Kleban-Levi disk profile (cos theta - cos theta_c) that returns a look-elsewhere-corrected GLOBAL p <= 0.05 against a LambdaCDM null pushed through the identical max-over-position-and-radius search - i.e. a candidate whose global max |M/sigma| exceeds the LambdaCDM 95th percentile of that same max statistic. Note the bar the claim's own numbers set: the observed maximum is |M/sigma| = 2.6 at global p = 0.903, so the LambdaCDM null median of the max statistic already sits ABOVE 2.6. Firing therefore requires a candidate materially beyond the present best spot, not merely a locally 3-sigma-looking disk.

Verification record — every quoted number, re-run 2026-07-09

quantitymeasuredverdict
global bubble p-value 0.903 → 0.0σ CLOSE
best candidate COLD disk, r = 10° MATCH
candidate local S/N 2.6 MATCH
candidate direction (214°, -27°) MATCH
Cold Spot local S/N 1.7 MATCH

Provenance

script: tilt_seam/run_bubble_collisions.py
script status: PRESENT
datasets: Planck SMICA · claim-scripts (downloadable from /data — run it yourself)
re-run: 2026-07-09

Status, honestly

R0 pass 2026-07-09 (close: p = 0.903 is the re-run value) | kill test added by the 2026-07-26 sweep. This status was assigned by hand from the public re-run audit above — it is a judgement made from that evidence, not a number this site computed for itself. What cannot move it is authority: no vote, endorsement, or say-so, from anyone including the maintainer. Independent reproduction would move it; nothing else will.

§ Figures 1 from tilt_seam/run_bubble_collisions.py

What this claim's own script draws. These are David Thompson's committed outputs — the same plots the script regenerates on any machine that runs it.

bubble_search.png 287.9 KB download
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