I discuss the amount of information in quantum field theory states reduced to a region, that cannot be recovered from its subregion density matrices. One can reconstruct the density matrix from its subregions using two approaches: scaling maps and recovery maps. The vacuum of a conformal field theory is a quantum Markov state and the fixed point of both transformations. I define the entanglement of scaling and the entanglement of recovery as measures of entanglement at a scale, and mention connections with C-theorems proofs in 2, 3 and 4 dimensions.
HET Seminar | Nima Lashkari, MIT | "Diffeomorphisms and RG monotones" | PCTS Seminar Rm
Fri, Oct 13, 2017, 1:45 pm
PCTS Seminar Room