{
  "abstract": "Parity-violating initial conditions are uniquely compelling signatures of inflationary dynamics beyond the single-field slow-roll paradigm, and their effects on the distribution of late-time observables can be easily separated from that of gravitational nonlinearities and galaxy formation physics. In this work, we propose using the momentum field, $\\mathbf{p} = (1+δ)\\mathbf{v}$, and, in particular, the density-density-momentum bispectrum as a novel probe of primordial parity violation. This class of bispectra greatly complements traditional searches using four-point statistics of the density field, furnishing new observables that can be sensitive to parity-violating physics. At the same time, its lower dimensionality substantially reduces the complexity associated with analysing high-dimensional data vectors and their covariance. We show that the sensitivity of the density-density-momentum bispectrum to parity violation effects persists even if we can only observe the projection of the momentum field along the line-of-sight. We perform a Fisher forecast for the parity-violating amplitude of the ultra-squeezed template in the cross bispectrum of kinetic Sunyaev-Zel'dovich (kSZ) anisotropies and galaxy clustering, and we find that our approach give competitive constraints when compared to existing methods. Our method can be easily co-opted to existing pipelines to study parity violation and, as the galaxy-galaxy-kSZ bispectrum is a key cosmological probe, take advantage of the significant existing efforts dedicated to mitigating systematics and covariance modelling.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.08671",
  "author_total": 4,
  "authors": [
    {
      "name": "Yong Sheng Yap"
    },
    {
      "name": "William R. Coulton"
    },
    {
      "name": "Jiamin Hou"
    },
    {
      "name": "Steven Gratton"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/5bw35dzgk151k.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.08671",
  "fulltext_url": null,
  "id": "5bw35dzgk151k",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.08671",
  "language": null,
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "http://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "astro-ph.CO"
    ],
    [
      "arxiv",
      "hep-ph"
    ],
    [
      "openalex",
      "3103|Cosmology and Gravitation Theories"
    ]
  ],
  "openalex": "W7220925651",
  "pdf_url": "https://arxiv.org/pdf/2610.08671",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-06",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/5bw35dzgk151k.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:27:22Z",
      "native_id": "2610.08671",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.08671"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.CO",
      "subfield": "cosmology"
    },
    {
      "field": "physics",
      "origin": "arxiv:hep-ph",
      "subfield": "high-energy"
    }
  ],
  "title": "Boosted Odds: Lower-Point Probes of Parity Violation with Momentum Fields",
  "title_text": "Boosted Odds: Lower-Point Probes of Parity Violation with Momentum Fields",
  "type": "preprint",
  "updated_at": "2026-11-09T00:20:15Z",
  "url": "https://research.draconitic.com/paper/5bw35dzgk151k",
  "venue": "arXiv",
  "versions": []
}