Astrophysics & Aerospace Technology

A single theory is not a theory of everything. These are unified equations for electromagnetic fields (Maxwell) and equations for gravitational fields. These are the unified equations of relativistic dynamics of the Special Theory of Relativity and quantum relativistic dynamics. These are the unified equations of the General Theory of Relativity and quantum gravity.

In cosmology, the Planck era refers to the period in the history of the Universe during which the four fundamental interactions (electromagnetism, weak interaction, strong interaction and gravitation) were unified, that is to say -to say that they applied at the same time, which prevents it from being described using general relativity or quantum physics, since these theories are incomplete and are only valid when gravitation and quantum effects can be studied separately.