Searcharxiv⌕ Search
Home/Archive/arXiv

arXiv · 2601.19015

Low Energy Neutrinos in Milky Way and Cloud-9

Eduardo Flores·Elise Cantu·Ian Marano·Osvan Vivar-Garcia·Shabhaz Khalandar·Patrick Walker
View original source ↗Read source document ↗Export metadata ↓

Abstract

We study low-energy galactic neutrinos in the Milky Way under two descriptions of gravity and show that they can prove gravity underlying nature. If gravity is quantum, its long-range interaction produces an atom-like bound neutrino structure. However, we find that withing 292 kpc, this structure contributes only 10 to the -29 of the galaxy dark matter, ruling it out as a deark-matter candidate. Its detection would nevertheless provide direct evidence for quantum gravity mediated by gravitons. If gravity instead arises from spacetime curvature, neutrinos interact only through the short-range weak force and behave as free, collisionless classical particles orbiting the galaxy. In this regime, they do not experience Fermi pressure and can form a sufficiently compact population to reproduce the Milky Way rotation curve. We further model Cloud-9 dark-matter compoent as free, collisionless neutrinos. Because neutrino-antinetrino annihilation cross section is extremely small, neutrinos and antineutrinos may remai near equilibrium over cosmological timescales, potentially relating this framework to the observed matter-antimatter assymmetry.

Explore related subjects

hep-phastro-ph.GA

Keep this discovery

BibTeXRIS

Eduardo Flores, Elise Cantu, Ian Marano, Osvan Vivar-Garcia, Shabhaz Khalandar, Patrick Walker. 2026-01-26. Low Energy Neutrinos in Milky Way and Cloud-9. https://arxiv.org/abs/2601.19015

Cite the original work for its findings. Save a collection to share your selection of sources.

KEEP EXPLORING

Related papers

arXiv2026

Axionic Wormholes in Metric-Affine Gravity

The axion is a promising candidate for solving the strong CP problem. To solve this problem, the global U(1) symmetry must be preserved to a high degree of accuracy. However, it is well known that global symmetries are explicitly violated by quantum gravity effects, giving rise to what is referred to as the axion quality problem. In this paper, we investigate axionic wormholes as a source of explicit U(1) violation in Metric-Affine Gravity. This framework allows for spacetime torsion and non-metricity, which accommodate additional curvature-like and topological terms, such as the Holst and Nieh--Yan terms, that are absent from the metric and Palatini formalisms. We show that non-minimal couplings to these terms modify the wormhole dynamics and enhance the Euclidean wormhole action, thereby alleviating the axion quality problem. We also find that the viable parameter space is enlarged when two of these couplings are simultaneously present. We further identify representative parameter regions where the alleviation of the axion quality problem is compatible with inflationary constraints.

hep-ph↗
arXiv2026

Qubit-Qutrit Quantum Tomography of hadronic $\Lambda\phi$ and $\Lambda K^{\ast 0}$ systems

Quantum-information observables have emerged in recent years as new tools in nuclear and particle physics, from entanglement in top-quark pairs to spin correlations in $\Lambda\bar{\Lambda}$ production. Extending these studies to unequal-spin hadronic final states poses a fundamental challenge: the $6\times6$ density matrix of a qubit-qutrit system contains 35 independent spin parameters, but the decays of $\Lambda V$ pairs, with $V=\phi$ or $K^{*0}$, provide access to only 23 due to the hidden vector polarization from the strong decay. In this Letter, we formulate a qubit-qutrit quantum tomography (QQQT) technique for these spin-$\tfrac{1}{2}\otimes1$ systems and establish exact criteria for entanglement certification from the \textit{incomplete} density matrix. Compared with the $\Lambda\bar{\Lambda}$ system, QQQT of $\Lambda\phi$ and $\Lambda K^{*0}$ provides a new probe of nonperturbative QCD hadronization, enabling a direct comparison of the spin evolution of entangled quark pairs produced from the vacuum as they hadronize into a baryon or a vector meson.

hep-ph↗
arXiv2026

Twist decomposition of exclusive heavy meson production cross sections

We study the twist decomposition of the total cross sections for exclusive heavy vector meson electroproduction and photoproduction in the $\gamma^\ast p$ processes, within the leading logarithmic $1/x$ BFKL formalism. The Mellin transforms of the impact factors of the vector meson are calculated. We show that the higher twist contributions are strongly suppressed in the low-$x$ kinematical regime. Possible enhancement of the higher twists effects for nuclei targets is discussed.

hep-ph↗