Relativity and Cosmology

    

Cosmological Thermodynamics and the Source of Dark Matter

Authors: Robert Street

The Friedmann equations and the ΛCDM model describe the adiabatic expansion of the universe. The model explains the red-shift and decrease in total energy of the photons but the equations also require energy conservation according to the first law of thermodynamics, an apparent contradiction that has proved hard to understand. Further consideration of the thermodynamics of adiabatic expansion demonstrates how to reconcile the loss of energy of the photons with overall conservation of energy, and points to the source of dark matter.

Comments: 5 Pages.

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[v1] 2025-02-12 21:06:20

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