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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Chern-Simons diffusion rate from higher curvature gravity

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Author(s):
Jahnke, Viktor [1] ; Misobuchi, Anderson Seigo [1] ; Trancanelli, Diego [1]
Total Authors: 3
Affiliation:
[1] Univ Sao Paulo, Inst Fis, BR-05314970 Sao Paulo - Brazil
Total Affiliations: 1
Document type: Journal article
Source: Physical Review D; v. 89, n. 10 MAY 8 2014.
Web of Science Citations: 5
Abstract

An important transport coefficient in the study of non-Abelian plasmas is the Chern-Simons diffusion rate, which parametrizes the rate of transition among the degenerate vacua of a gauge theory. We compute this quantity at strong coupling, via holography, using two theories of gravity with higher curvature corrections, namely Gauss-Bonnet gravity and quasitopological gravity. We find that these corrections may either increase or decrease the result obtained from Einstein's gravity, depending on the value of the couplings. The Chern-Simons diffusion rate for Gauss-Bonnet gravity decreases as the shear viscosity over entropy ratio is increased. (AU)

FAPESP's process: 13/02775-0 - Aspects of the AdS/CFT correspondence
Grantee:Diego Trancanelli
Support Opportunities: Regular Research Grants