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Holographic quenches and anomalous transport
File(s)
art%3A10.1007%2FJHEP09%282016%29131.pdf (1.13 MB)
Published version
Author(s)
Ammon, M
Grieninger, S
Jimenez-Alba, A
Macedo, RP
Melgar Del Pozo, L
Type
Journal Article
Abstract
We study the response of the chiral magnetic effect due to continuous quenches induced by time dependent electric fields within holography. Concretely, we consider a holographic model with dual chiral anomaly and compute the electric current parallel to a constant, homogeneous magnetic field and a time dependent electric field in the probe approximation. We explicitly solve the PDEs by means of pseudospectral methods in spatial and time directions and study the transition to an universal “fast” quench response. Moreover, we compute the amplitudes, i.e., residues of the quasi normal modes, by solving the (ODE) Laplace transformed equations. We investigate the possibility of considering the asymptotic growth rate of the amplitudes as a well defined notion of initial time scale for linearized systems. Finally, we highlight the existence of Landau level resonances in the electrical conductivity parallel to a magnetic field at finite frequency and show explicitly that these only appear in presence of the anomaly. We show that the existence of these resonances induces, among others, a long-lived AC electric current once the electric field is switched off.
Date Issued
2016-09-21
Date Acceptance
2016-08-24
Citation
Journal of High Energy Physics, 2016, 2016 (9)
URI
http://hdl.handle.net/10044/1/41779
DOI
https://www.dx.doi.org/10.1007/JHEP09(2016)131
ISSN
1126-6708
Publisher
Springer Verlag
Journal / Book Title
Journal of High Energy Physics
Volume
2016
Issue
9
Copyright Statement
© The Author(s) 2016. JHEP is an open-access journal funded by SCOAP3 and licensed under CC BY 4.0.
License URL
http://creativecommons.org/licenses/by/4.0/
Subjects
Nuclear & Particles Physics
Publication Status
Published
Article Number
131
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