P3v1.0· 12/05/2026 GMT+7Public draft · not peer-reviewed

Bagua Cosmology: Closed-form Hubble, Cosmological Constant, Inflation, and a Pre-Big-Bang Bounce on Q₇

Cosmology closed forms

Duc Anh Phung · astro-ph.CO · cross: hep-th, gr-qc · ~12 pages · JCAP

Abstract

Cosmology companion: h=27/40 and SH0ES ratio √(75/64), Ω shell partition, n_s=55/57, inflation from V(φ), bounce vs singularity, and SGWB tilt n_T=3/13. Same substrate as P1; no new free parameters.

Related wiki

Law 57 H₀ Law 50 inflation

SymPy reproduce

scripts/spt_hubble_h0.py
scripts/spt_inflation.py
scripts/spt_bigbang_dynamics.py
scripts/spt_gw_stochastic_spectrum.py

Full H1 kit on hub

BibTeX

@article{PhungP3SPT,
  author  = {Phung, Duc Anh},
  title   = {Bagua Cosmology: Closed-form Hubble, Cosmological Constant, Inflation, and a Pre-Big-Bang Bounce on Q₇},
  year    = {2026},
  note    = {v1.0; public draft; /papers/P3.pdf; arXiv pending},
  url     = {https://www.supremepolarity.com/papers/p3-cosmology}
}

Independent · Hanoi · AI-assisted development. No peer-review claim until arXiv/journal.