Entanglement entropy in scalar quantum electrodynamics

Samuel Fedida, Anupam Mazumdar, Sougato Bose, Alessio Serafini

OnderzoeksoutputAcademicpeer review

1 Citaat (Scopus)
8 Downloads (Pure)


We find the entanglement entropy of a subregion of the vacuum state in scalar quantum electrodynamics, working perturbatively to the two-loop level. Doing so leads us to derive the Maxwell-Proca propagator in conical Euclidean space. The area law of entanglement entropy is recovered in both the massive and massless limits of the theory, as is expected. These results yield the renormalization group flow of entanglement entropy, and we find that loop contributions suppress entanglement entropy. We highlight these results in the light of the renormalization group flow of couplings and correlators, which are increased in scalar quantum electrodynamics, so that the potential tension between the increase in correlations between two points of spacetime and the decrease in entanglement entropy between two regions of spacetime with energy is discussed. We indeed show that the vacuum of a subregion of spacetime purifies with energy in scalar quantum electrodynamics, which is related to the concept of screening.

Originele taal-2English
Aantal pagina's9
TijdschriftPhysical Review D
Nummer van het tijdschrift6
StatusPublished - 15-mrt.-2024


Duik in de onderzoeksthema's van 'Entanglement entropy in scalar quantum electrodynamics'. Samen vormen ze een unieke vingerafdruk.

Citeer dit