Information flows in strongly coupled ABJM theory

Show full item record



Balasubramanian , V , Jokela , N , Ponni , A & Ramallo , A V 2019 , ' Information flows in strongly coupled ABJM theory ' , Journal of High Energy Physics , vol. 2019 , no. 1 , 232 .

Title: Information flows in strongly coupled ABJM theory
Author: Balasubramanian, Vijay; Jokela, Niko; Ponni, Arttu; Ramallo, Alfonso V.
Contributor organization: Department of Physics
Helsinki Institute of Physics
Date: 2019-01-31
Language: eng
Number of pages: 38
Belongs to series: Journal of High Energy Physics
ISSN: 1029-8479
Abstract: We use holographic methods to characterize the RG flow of quantum information in a Chern-Simons theory coupled to massive fermions. First, we use entanglement entropy and mutual information between strips to derive the dimension of the RG-driving operator and a monotonic c-function. We then display a scaling regime where, unlike in a CFT, the mutual information between strips changes non-monotonically with strip width, vanishing in both IR and UV but rising to a maximum at intermediate scales. The associated information transitions also contribute to non-monotonicity in the conditional mutual information which characterizes the independence of neighboring strips after conditioning on a third. Finally, we construct a measure of extensivity which tests to what extent information that region A shares with regions B and C is additive. In general, mutual information is super-extensive in holographic theories, and we might expect super-extensivity to be maximized in CFTs since they are scale-free. Surprisingly, our massive theory is more super-extensive than a CFT in a range of scales near the UV limit, although it is less super-extensive than a CFT at all lower scales. Our analysis requires the full ten-dimensional dual gravity background, and the extremal surfaces computing entanglement entropy explore all of these dimensions.
Subject: AdS-CFT Correspondence
114 Physical sciences
Peer reviewed: Yes
Rights: cc_by
Usage restriction: openAccess
Self-archived version: publishedVersion

Files in this item

Total number of downloads: Loading...

Files Size Format View
Balasubramanian ... ionFlowsInStronglyCoup.pdf 760.3Kb PDF View/Open

This item appears in the following Collection(s)

Show full item record