What is another word for density matrix?
Pronunciation: [dˈɛnsɪti mˈe͡ɪtɹɪks] (IPA) 
The density matrix is a mathematical tool used in quantum mechanics to describe the state of a quantum system. It is also known as the density operator or statistical operator. The density matrix is a square matrix that represents the state of a system in terms of its quantum states. However, there are other synonymous terms that refer to the same concept. For example, in some contexts, it can be called the density function, density operator, or density matrix operator. In physics, it is also sometimes called the quantum state operator or density operator function. Regardless of the term used, the density matrix is a central concept in quantum mechanics, which is crucial for calculating the properties of quantum systems.
