Matrix model

The term matrix model may refer to one of several concepts:

• In theoretical physics, a matrix model is a system (usually a quantum mechanical system) with matrix-valued physical quantities. See, for example, Lax pair.

• The "old" matrix models are relevant for string theory in two spacetime dimensions. The "new" matrix model is a synonym for Matrix theory.

• Matrix population models are used to model wildlife and human population dynamics.

• The Matrix Model of substance abuse treatment was a model developed by the Matrix Institute in the 1980s to treat cocaine and methamphetamine addiction.

• A concept from Algebraic logic.

• The term "Matrix model" is used to describe Matrix management where each worker in an organisation has two managers, one "functional": managing their expertise, the other "executive": managing their work on an a project.

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