PreprintCC BY 4.0arXiv
Probing the dynamical inverse seesaw mechanism with low-frequency gravitational waves
Abstract
We study the possibility of probing the dynamical inverse seesaw mechanism for the origin of light neutrino masses via the detection of stochastic gravitational waves (GW) in the low-frequency regime currently being probed by pulsar timing arrays. As the lepton number-violating term in inverse seesaw typically remains in the sub-MeV ballpark, its dynamical origin naturally brings the possibility of a low-scale first-order phase transition, which can be probed at low-frequency GW experiments. We also find interesting complementarity with heavy neutral lepton searches, as GW experiments remain sensitive to parameter space with small active-sterile mixing, which is out of reach for most particle physics experiments.
Versions
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BibTeX
@misc{borah2026probing,
title = {{Probing the dynamical inverse seesaw mechanism with low-frequency gravitational waves}},
author = {Debasish Borah and Sounak Dutta and Partha Kumar Paul and Indrajit Saha and Narendra Sahu},
howpublished = {arXiv},
year = {2026},
month = oct,
doi = {10.48550/arxiv.2605.27519},
eprint = {2605.27519},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2605.27519},
note = {CC BY 4.0},
}
RIS
TY - UNPB
TI - Probing the dynamical inverse seesaw mechanism with low-frequency gravitational waves
AU - Debasish Borah
AU - Sounak Dutta
AU - Partha Kumar Paul
AU - Indrajit Saha
AU - Narendra Sahu
PY - 2026
DA - 2026/10/27
PB - arXiv
DO - 10.48550/arxiv.2605.27519
UR - https://arxiv.org/abs/2605.27519
AB - We study the possibility of probing the dynamical inverse seesaw mechanism for the origin of light neutrino masses via the detection of stochastic gravitational waves (GW) in the low-frequency regime currently being probed by pulsar timing arrays. As the lepton number-violating term in inverse seesaw typically remains in the sub-MeV ballpark, its dynamical origin naturally brings the possibility of a low-scale first-order phase transition, which can be probed at low-frequency GW experiments. We also find interesting complementarity with heavy neutral lepton searches, as GW experiments remain sensitive to parameter space with small active-sterile mixing, which is out of reach for most particle physics experiments.
ER -