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PreprintCC BY 4.0arXiv

Relic Neutrinos Probing Small Scale Primordial Non-Gaussianity

  • Suraj Gavhale
  • Shin'ichi Nojiri
  • Sergei D. Odintsov
  • Oem Trivedi
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Abstract

Relic neutrinos retain a record of electromagnetic entropy production after neutrino decoupling, probing primordial modes erased from the primary CMB. We derive the cubic photon number source from acoustic damping and its leading folded sensitive bispectrum window, with neutrino decoupling, thermalization, and acoustic coherence combined in a single response kernel. For excited initial states, this kernel filters the physical folded profile and yields a sharpness dependent transmission condition, directly connecting small scale primordial non-Gaussianity to relic neutrino capture rates.

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Cite

BibTeXRIS
BibTeX
@misc{gavhale2026relic,
  title = {{Relic Neutrinos Probing Small Scale Primordial Non-Gaussianity}},
  author = {Suraj Gavhale and Shin'ichi Nojiri and Sergei D. Odintsov and Oem Trivedi},
  howpublished = {arXiv},
  year = {2026},
  month = sep,
  doi = {10.48550/arxiv.2609.34324},
  eprint = {2609.34324},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2609.34324},
  note = {CC BY 4.0},
}
RIS
TY  - UNPB
TI  - Relic Neutrinos Probing Small Scale Primordial Non-Gaussianity
AU  - Suraj Gavhale
AU  - Shin'ichi Nojiri
AU  - Sergei D. Odintsov
AU  - Oem Trivedi
PY  - 2026
DA  - 2026/09/28
PB  - arXiv
DO  - 10.48550/arxiv.2609.34324
UR  - https://arxiv.org/abs/2609.34324
AB  - Relic neutrinos retain a record of electromagnetic entropy production after neutrino decoupling, probing primordial modes erased from the primary CMB. We derive the cubic photon number source from acoustic damping and its leading folded sensitive bispectrum window, with neutrino decoupling, thermalization, and acoustic coherence combined in a single response kernel. For excited initial states, this kernel filters the physical folded profile and yields a sharpness dependent transmission condition, directly connecting small scale primordial non-Gaussianity to relic neutrino capture rates.
ER  -