(algebraic geometry) The theory of Donaldson-Thomas invariants.

A theory of history that sees it as driven by the actions of powerful individuals or those with natural-born greatness.

(astronomy) A mathematical theory that attempts to describe the evolution of the constituents of the universe following the Big Bang

(chemistry, physics) a theory, a combination of the earlier crystal field theory with molecular orbital theory, that describes the structure of coordination compounds

(physics) A theory that unifies the electromagnetic interaction, the weak interaction, and the strong interaction.

the theory that changes in prices and the value of money vary with changes in the amount of money in circulation

A theory of communication arguing that people adjust their speech and gestures to accommodate to others with whom they are interacting.

(chemistry, physics) A description of various properties of transition element complex compounds that compares the effects of its ligands to that of neighbouring atoms in a crystal

(philosophy) A metaethical theory stating that an action is morally good if commanded by God and morally bad if forbidden by God.

The idea that ghosts and hauntings are analogous to tape recordings, and that electrical mental impressions released during emotional or traumatic events can somehow be "stored" in stone and other materials and "replayed" under certain conditions.