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Intermediate scalings in holographic RG flows and conductivities

Bhattacharya, J.; Cremonini, S.; Goutereaux, B.

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Authors

J. Bhattacharya

S. Cremonini

B. Goutereaux



Abstract

We construct numerically finite density domain-wall solutions which interpolate between two AdS 4 fixed points and exhibit an intermediate regime of hyperscaling violation, with or without Lifshitz scaling. Such RG flows can be realized in gravitational models containing a dilatonic scalar and a massive vector field with appropriate choices of the scalar potential and couplings. The infrared AdS 4 fixed point describes a new ground state for strongly coupled quantum systems realizing such scalings, thus avoiding the well-known extensive zero temperature entropy associated with AdS2×R2. We also examine the zero temperature behavior of the optical conductivity in these backgrounds and identify two scaling regimes before the UV CFT scaling is reached. The scaling of the conductivity is controlled by the emergent IR conformal symmetry at very low frequencies, and by the intermediate scaling regime at higher frequencies.

Citation

Bhattacharya, J., Cremonini, S., & Goutereaux, B. (2015). Intermediate scalings in holographic RG flows and conductivities. Journal of High Energy Physics, 2015(2), https://doi.org/10.1007/jhep02%282015%29035

Journal Article Type Article
Acceptance Date Jan 19, 2015
Online Publication Date Feb 5, 2015
Publication Date Feb 5, 2015
Deposit Date Dec 30, 2015
Publicly Available Date Jan 25, 2016
Journal Journal of High Energy Physics
Print ISSN 1126-6708
Publisher Scuola Internazionale Superiore di Studi Avanzati (SISSA)
Peer Reviewed Peer Reviewed
Volume 2015
Issue 2
DOI https://doi.org/10.1007/jhep02%282015%29035
Keywords Holography and condensed matter physics (AdS/CMT), AdS-CFT Correspondence.
Related Public URLs http://arxiv.org/abs/1409.4797

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Publisher Licence URL
http://creativecommons.org/licenses/by/4.0/

Copyright Statement
Open Access, © The Authors. Article funded by SCOAP3. This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited.





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