Complex sentence: Heim theory is a term used to describe a non-mainstream'theory of everything', proposed by Burkhard Heim and further developed by Walter Dröscher and Jochem Häuser However, these claims have not been widely accepted within mainstream physics.
Split into simpler sentences: Heim theory is a term used to describe a non-mainstream'theory of everything', proposed by Burkhard Heim and further developed by Walter Dröscher and Jochem Häuser. These claims have not been widely accepted within mainstream physics.