BOSS DR12 full-shape cosmology: <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi mathvariant="normal">Λ</mml:mi><mml:mi>CDM</mml:mi></mml:mrow></mml:math> constraints from the large-scale galaxy power spectrum and bispectrum monopole

Why is this work in the frame?

A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.

No Canadian affiliation. An affiliation-only frame, the usual design, would never have seen this work. It is one of the works that make the case for inverting the frame.

Full frame distilled prediction

Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.

Candidate categories

Meta-epidemiology (narrow), Science and technology studies, Insufficient payload (model declined to judge)

Consensus categories

Insufficient payload (model declined to judge)

Domain

Candidate signal: noneConsensus signal: none

Study design

Candidate signal: Theoretical or conceptualConsensus signal: Theoretical or conceptual

Genre

Candidate signal: EmpiricalConsensus signal: Empirical

Teacher disagreement score

0.563

Threshold uncertainty score

1.000

Validation status

machine_predicted_unvalidated · codex-gemma-dda1882f352a

Codex and Gemma teacher scores by category

Machine scores (provisional)

The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.

Teacher spread

0.282 · how far apart the two teachers sit on this one work

Validation status

score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it

Abstract

We present a full $\mathrm{\ensuremath{\Lambda}}\mathrm{CDM}$ analysis of the BOSS DR12 dataset, including information from the power spectrum multipoles, the real-space power spectrum, the reconstructed power spectrum and the bispectrum monopole. This is the first analysis to feature a complete treatment of the galaxy bispectrum, including a consistent theoretical model and without large-scale cuts. Unlike previous works, the statistics are measured using window-free estimators: this greatly reduces computational costs by removing the need to window-convolve the theory model. Our pipeline is tested using a suite of high-resolution mocks and shown to be robust and precise, with systematic errors far below the statistical thresholds. Inclusion of the bispectrum yields consistent parameter constraints and shrinks the ${\ensuremath{\sigma}}_{8}$ posterior by 13% to reach $&lt;5%$ precision; less conservative analysis choices would reduce the error bars further. Our constraints are broadly consistent with Planck: in particular, we find ${H}_{0}={69.6}_{\ensuremath{-}1.3}^{+1.1}\text{ }\text{ }\mathrm{km}{\mathrm{s}}^{\ensuremath{-}1}\text{ }{\mathrm{Mpc}}^{\ensuremath{-}1}$, ${\ensuremath{\sigma}}_{8}=0.69{2}_{\ensuremath{-}0.041}^{+0.035}$ and ${n}_{s}=0.87{0}_{\ensuremath{-}0.064}^{+0.067}$, including a BBN prior on the baryon density. When ${n}_{s}$ is set by Planck, we find ${H}_{0}=68.3{1}_{\ensuremath{-}0.86}^{+0.83}\text{ }\text{ }\mathrm{km}{\mathrm{s}}^{\ensuremath{-}1}\text{ }{\mathrm{Mpc}}^{\ensuremath{-}1}$ and ${\ensuremath{\sigma}}_{8}=0.72{2}_{\ensuremath{-}0.036}^{+0.032}$. Our ${S}_{8}$ posterior, $0.751\ifmmode\pm\else\textpm\fi{}0.039$, is consistent with weak lensing studies, but lower than Planck. Constraints on the higher-order bias parameters are significantly strengthened from the inclusion of the bispectrum, and we find no evidence for deviation from the dark matter halo bias relations. These results represent the most complete full-shape analysis of BOSS DR12 to-date, and the corresponding spectra will enable a variety of beyond-$\mathrm{\ensuremath{\Lambda}}\mathrm{CDM}$ analyses, probing phenomena such as the neutrino mass and primordial non-Gaussianity.

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

The record

Venue

Physical review. D/Physical review. D.

Topic

Cosmology and Gravitation Theories

Field

Physics and Astronomy

Canadian institutions

not available

Funders

Lawrence Berkeley National LaboratoryBrookhaven National LaboratoryConsejo Superior de Investigaciones CientíficasOffice of ScienceMax-Planck-Institut für AstrophysikUniversidad Autónoma de MadridMinisterio de Economía y CompetitividadYork UniversityNational Energy Research Scientific Computing CenterJinan UniversitySpace Telescope Science InstitutePennsylvania State UniversityUniversity of VirginiaUniversity of Notre DameUniversity of ArizonaCollege of Engineering, Michigan State UniversityUniversity of WashingtonPrinceton UniversityAlfred P. Sloan FoundationJohns Hopkins UniversityUniversity of UtahCarnegie Mellon UniversityMichigan State UniversityMinisterio de Ciencia e InnovaciónUniversity of FloridaUniversity of TokyoOhio State UniversityCentro de Biología Molecular Severo OchoaNew Mexico State UniversityUniversity of PortsmouthYale UniversityVanderbilt UniversityHarvard UniversitySimons FoundationNational Aeronautics and Space AdministrationU.S. Department of EnergyNational Science Foundation

Keywords

BossCosmologyPhysicsAstrophysicsEngineeringMechanical engineering

Has abstract in OpenAlex

yes

API

/api/v1/works/W4211152155