Predictions → Galaxy Bispectrum fNL
Prediction
Galaxy Bispectrum fNL
P2 is the lead theoretical result: under its stated matter-contraction assumptions, it derives fNL = -35/16 = -2.1875. A future non-Gaussianity measurement can test that conditional prediction; no current survey measurement establishes a bounce.
Current constraint
Current external constraints remain too broad to establish this prediction. Earlier DESI anomaly-tracer improvement estimates are legacy/superseded pipeline work, not a current flagship result. SPHEREx forecasts are conditional tests, not detections.
Key results
- P2 derives fNL = -35/16 under its stated matter-contraction assumptions
- Existing external constraints do not discriminate this conditional value
- Legacy anomaly-tracer forecasts are preserved as superseded methodology, not current evidence
- SPHEREx sensitivity forecasts describe a prospective conditional test
- Possible links to PBH or gravitational-wave phenomenology remain theoretical
Connected work
Surveys: SPHEREx (future conditional test) · Legacy DESI/SDSS/LAMOST pipeline records (not current evidence)
Papers: P2 — lead f_NL theory result · P3 — Integrated Supporting Data Release · DESI Public-ID Recovery
Timeline
Prospective SPHEREx sensitivity is a conditional test; present constraints do not discriminate the scenario.
Next steps
- openMaintain the P2 derivation and its stated assumptions
- openTreat future SPHEREx analysis as a prospective conditional test
- openDo not use legacy anomaly-pipeline candidate counts as bounce evidence