Author(s)

Eugene Terry Tatum¹, Espen Gaarder Haug²

¹Independent Researcher, Kentucky, USA.
²Tempus Gravitational Laboratory, Aas, Norway.

Haug and Tatum have recently developed a cosmological model which links cosmic age, the Hubble constant, cosmic temperature, cosmological redshift and the Planck length in a manner fully consistent with general relativity. Furthermore, they have employed the Bekenstein-Hawking formula for black hole entropy and the “entropic gravity” and “entropic force” concepts of Erik Verlinde in order to attempt a mathematical model of the phenomena currently attributed to “dark energy”. Within the Haug-Tatum model, the entropic force is treated as a real force, since such forces are connected to real energy when they do work. This energy connected to the cosmological entropic force can therefore be regarded as “entropic energy”. When applied to this model, the current epoch entropic energy density is shown to be approximately 7.5 × 10⁻¹⁰ J∙m⁻³. Thus, there is a close approximation to the current observed energy density of the “cosmological constant”. Our entropic energy density decay curve over the last 14 billion years of this model is presented in anticipation of the pending deep space dark energy survey results. Whether this “entropic energy” concept can be supported or refuted by observations, and whether cosmological “entropic energy” is what is currently called “dark energy,” is yet to be determined.

Dark Energy, Entropic Energy, Entropic Force, Entropic Gravity, Cosmic Entropy, Cosmology Models, R_H = ct Model, Haug-Tatum Cosmology, Black Holes, DESI

Tatum, E. and Haug, E. (2025) How the Haug-Tatum Cosmology Model Entropic Energy Might Be Directly Linked to Dark Energy. Journal of Modern Physics, 16, 382-389. doi: 10.4236/jmp.2025.163021.