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A Test for Cosmological Parity Violation Using the 3D Distribution of Galaxies

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arxiv 2110.12004 v1 pith:QLZESGWP submitted 2021-10-20 astro-ph.CO

Robert N. Cahn , Zachary Slepian , Jiamin Hou This is my paper
classification astro-ph.CO
keywords parityviolationcosmologicalcorrelationgalaxypointtestcorresponding
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abstract

We show that the galaxy 4-Point Correlation Function (4PCF) can test for cosmological parity violation. The detection of cosmological parity violation would reflect previously unknown forces present at the earliest moments of the Universe. Recent developments both in rapidly evaluating galaxy $N$-Point Correlation Functions (NPCFs) and in determining the corresponding covariance matrices make the search for parity violation in the 4PCF possible in current and upcoming surveys such as those undertaken by Dark Energy Spectroscopic Instrument (DESI), the $Euclid$ satellite, and the Vera C. Rubin Observatory (VRO).

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Cited by 5 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. Unitary and Analytic Renormalisation of Cosmological Correlators

    hep-th 2025-09 unverdicted novelty 7.0 of 10

    Different dimensional regularization schemes agree with each other and with unitarity; new analytic eta regulators simplify the work and fix the imaginary part of one-loop coefficients by the logarithmic running of th...

  2. No evidence for parity violation in BOSS

    astro-ph.CO 2024-07 unverdicted novelty 7.0 of 10

    New statistics applied to BOSS data show the reported parity violation signal is consistent with zero after accounting for eight-point correlation function mismatch between data and mocks.

  3. Probing Parity Violation with Weak Lensing Trispectrum

    astro-ph.CO 2026-07 conditional novelty 6.0 of 10

    A parity-odd weak lensing convergence trispectrum is derived and forecast to be detectable with DES Y3/LSST Y10-like surveys under optimistic template amplitudes.

  4. Parity Violation in Galaxy Shapes: Primordial Non-Gaussianity

    astro-ph.CO 2025-09 conditional novelty 6.0 of 10

    The parity-odd intrinsic alignment power spectrum probes the collapsed limit of the parity-odd primordial trispectrum and can tighten constraints on parity-violating PNG when bias parameters are calibrated from N-body...

  5. Measurement of Parity-Violating Modes of the Dark Energy Spectroscopic Instrument (DESI) Year 1 Luminous Red Galaxies' 4-Point Correlation Function

    astro-ph.CO 2025-08 conditional novelty 6.0 of 10

    DESI's first parity-violation search shows a strong auto-correlation signal that disappears when the sky is split into patches, pointing to underestimated mocks' variance rather than new physics.

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