What is another word for singlet state?
Pronunciation: [sˈɪŋɡlət stˈe͡ɪt] (IPA) 
A singlet state is a term used in physics to denote the condition of a system, wherein the total spin angular momentum is zero, and hence, there is only one possible spin state. Synonyms for this term include a spin-singlet state, a singlet configuration, or a singlet ground state. Scientists referring to these states often refer to them as being "entangled," meaning that the spin of each particle is correlated with that of its partner. Some other synonyms for the term include a non-degenerate excited state, a lowest-energy excited state, or a "dark state" because such states cannot be seen in experiments that rely on light as a probe.
