New computable entanglement monotones from formal group theory

Understand

We present a mathematical construction of new quantum information measures that generalize the notion of logarithmic negativity.

• Our approach is based on formal group theory.
• We shall prove that this family of generalized negativity functions, due their algebraic properties, is suitable for studying entanglement in many-body systems.
• Under mild hypotheses, the new measures are computable entanglement monotones.