Analysis of the Entanglement with Centers

Understand

We begin from the quantization algebras and constraint for analyzing the choice of centers in the first-order formulation without losing generality.

• Then we calculate the entanglement entropy in the non-interacting $p$-form theory in $2p+2$ dimensional Euclidean flat background with an $S^{2p}$ entangling surface.
• The universal term of the entanglement entropy in the non-interacting $p$-form theory is determined in terms of the universal terms of the non-interacting zero-form theory.
• We also prove the strong subadditivity in the non-interacting theory with the non-trivial centers.