Bounce cosmology · live research program
Was there a bounce before the Big Bang?
This is an open, falsifiable research program asking one question: can a nonsingular Big Bounce cosmology — a universe that contracted and rebounded rather than began at a singularity — beat the standard ΛCDM + inflation picture? We attack it from both ends: deriving where a bounce could leave a fingerprint, then mining tens of millions of archival survey sources to look for it.
Six papers, honest nulls, and quantified falsification windows — with the decisive test (SPHEREx, ~2028) already on the calendar. Everything here is public: the PDFs, the datasets, the models, and the code.
How the six papers fit together
One program, two halves
The theory arm (P1A, P1B, P2) asks where a nonsingular Einstein–Cartan–Holst bounce could leave a falsifiable fingerprint, proves the bounce mechanism itself is invisible to telescopes, closes the enumerated dark-energy routes, and isolates the one surviving handle — a parameter-free matter-bounce non-Gaussianity SPHEREx can test. The data arm (P3, P4, P5) mines 45M+ archival sources for the parity- and anomaly-level signatures any bounce would have to imprint, and reports honest nulls with quantified falsification windows. Negative theory results narrowed the search space; the surveys then went looking exactly where the theory said to look.
The evidence
The six papers
Closes all four minimal Einstein–Cartan–Holst routes from a quantum bounce to dark energy and proves the Holst sector is invisible to scalar/tensor perturbations — leaving two clean observational kill-tests (LiteBIRD birefringence, SPHEREx f_NL).
Technical companion to Paper 1A: a 309K-sample ΛCDM+ΔN_eff MCMC null test (ΔN_eff consistent with zero), a NaMaster pipeline validation on synthetic ΛCDM skies, a DESI DR2 w0wa chain (w_pivot +2.5σ from −1), and a spectator-ALP consistency check against the Planck+ACT β = 0.342° measurement.
Shows f_NL = −35/8 is a parameter-free, mechanism-independent prediction of all matter-bounce models, and forecasts SPHEREx will detect or kill it at 4.7–12σ by ~2028 — the decisive bounce-vs-inflation discriminator.
A 378,280-object anomaly catalog mined from 37.3M sources across 7 surveys with one autoencoder architecture — 17.8% of top-ranked objects are new to existing catalogs, plus a NANOGrav free-spectrum fit consistent with matter-bounce γ = 3.0.
Classifies 8.47M galaxies for spiral handedness with a rotation-equivariant ViT ensemble and finds a null real-space chirality dipole (+0.41σ, rank-p=0.31; A_dip < 6.8×10⁻³ at 95% UL) — the earlier −0.122σ subsample-mask null was withdrawn in v1.0.166 after a provenance audit.
Cross-matches P4's spiral handedness with DESI large-scale structure (791,635 matched spirals + 56,981 void spirals) and finds galaxy chirality is statistically independent of cosmic-web environment — constraining environment-coupled parity models.
What's new here
Top contributions
A short list of the program's most novel results. Each is scored on a four-tier scale; our self-claim ceiling is N3 (first-of-kind). The full accounting — prior work, equations, and verification links — lives on the contributions page.
Open science
Papers, data & models
Every paper compiles to a versioned PDF, served from the papers index.
The two public survey catalogs behind the data-arm papers.
The trained detectors that produced the catalogs.
Every headline number is reproducible from committed scripts.
Go deeper
Explore the program
All six papers are drafted, internally peer-reviewed across multiple independent models, and have passed repeated adversarial review rounds with their numbers reproduced from committed code. The remaining step is the author's final sign-off and a coordinated arXiv submission — the science is in place; what's left is publication logistics.