Quantum dark energy from neutrino loops: model, stability and oscillation imprints
Year: 2025
Type: article
Abstract: We propose a simple, renormalizable scenario in which all of dark energy arises from a one-loop Coleman–Weinberg potential induced by a scalar field Yukawa-coupled exclusively to Standard-Model neutrinos. Classically, $$V_{\min }=0$$ V min = 0 , but neutrino loops lift the vacuum by $$\rho _{\text {DE}}=\frac{y^{2}m_{\nu }^{6}}{512\pi ^{4}m_{\phi }^{2}}$$ ρ DE = y 2 m ν 6 512 π 4 m ϕ 2 , matching the observed dark energy scale for $$y\approx 0.28m_{\phi }/$$ y ≈ 0.28 m ϕ / eV and $$m_{\nu }\sim 0.1\,$$ m ν ∼ 0.1 eV. We detail cosmological tracking, demonstrate stability against neutrino clumping, and show that rapid scalar oscillations leave no detectable imprint on current neutrino-oscillation experiments—though they provide a clear target for future high-precision probes. Compared to other mass varying neutrino models, our framework employs only a renormalizable quadratic potential, avoids unnatural hierarchies, and makes concrete, testable predictions.
Source: The European Physical Journal C
Author: Z. Kepuladze
Institution: Ilia State University
Language: English
Subfield: Astronomy and Astrophysics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W4417303660