Theoretical physics

Theoretical physics is physics that employs mathematical models and abstractions rather than experimental processes. Theoretical physics attempts to understand the natural world by making a model of reality, used for rationalizing, explaining, and predicting physical phenomena in what are called "physical theories". There are three types of theories in physics: mainstream theories, proposed theories and fringe theories.

Proposed theories

The proposed theories of physics are relatively new theories which deal with the study of physics which include scientific approaches, means for determining the validity of models and new types of reasoning used to arrive at the theory. Proposed theories can include fringe theories in the process of becoming established (and, sometimes, gaining wider acceptance). Proposed theories usually have not been tested.

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Examples

• Emergence
• Grand unification theory*
• Loop quantum gravity*
• M-theory
• Plasma Universe
• String theory
• Theory of everything*