TITLE:
Dark Matter and Dark Energy as Radiating Media Accounts for the Cosmological Density Parameters
AUTHORS:
Harry I. Ringermacher
KEYWORDS:
Cosmology, Dark Matter, Dark Energy, Dark Radiation
JOURNAL NAME:
Journal of Modern Physics,
Vol.17 No.5,
May
14,
2026
ABSTRACT: We present the possibility that dark matter and dark energy behave analogously to accelerating electric charges but emitting dark radiation and reacting to that radiation. Classical electromagnetic radiation-reaction is governed by the Lorentz-Dirac equation for a charged particle with length scale given by the classical electron radius. Changing to a cosmological length scale,
l≡λ
R
0
, where
R
0
is the Hubble radius, we couple the Lorentz-Dirac equation with the Friedmann equations utilizing the two equation of state parameters,
w=0
for dark and baryonic matter and
w=−1
for dark energy. Solving the three resulting cosmological Lorentz-Dirac equations for the three types of matter yields the remarkable solutions for characteristic length scale,
λ=1/
15
:
Ω
DE
=3/4
,
Ω
DM
=1/5
and
Ω
BM
=1/
20
, where
Ω
is the mass density normalized by the critical density. These match the observed WMAP parameters to within a few percent.