After reading the question and answers in Definition of short range entanglement I wonder why the definition of a short-range entangled state is given in terms of its possible deformations -

A SRE state is a gapped state that can be smoothly deformed into the trivial product state without a phase transition (all the symmetries are allowed to break during the deformation)

Shouldn't the definition be more like "An SRE state is a state where entangled degrees of freedom are found at a short distance away from each other"? Does this property characterize SRE states? Is it well defined (or basis dependent?)



Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Browse other questions tagged or ask your own question.