Change search
ReferencesLink to record
Permanent link

Direct link
Commensurability effects in holographic homogeneous lattices
KTH, Centres, Nordic Institute for Theoretical Physics NORDITA. Leiden Univ, Inst Lorentz, Netherlands.
2016 (English)In: Journal of High Energy Physics (JHEP), ISSN 1126-6708, E-ISSN 1029-8479, no 5, 039Article in journal (Refereed) PublishedText
Abstract [en]

An interesting application of the gauge/gravity duality to condensed matter physics is the description of a lattice via breaking translational invariance on the gravity side. By making use of global symmetries, it is possible to do so without scarifying homogeneity of the pertinent bulk solutions, which we thus term as "homogeneous holographic lattices." Due to their technical simplicity, these configurations have received a great deal of attention in the last few years and have been shown to correctly describe momentum relaxation and hence (finite) DC conductivities. However, it is not clear whether they are able to capture other lattice effects which are of interest in condensed matter. In this paper we investigate this question focusing our attention on the phenomenon of commensurability, which arises when the lattice scale is tuned to be equal to (an integer multiple of) another momentum scale in the system. We do so by studying the formation of spatially modulated phases in various models of homogeneous holographic lattices. Our results indicate that the onset of the instability is controlled by the near horizon geometry, which for insulating solutions does carry information about the lattice. However, we observe no sharp connection between the characteristic momentum of the broken phase and the lattice pitch, which calls into question the applicability of these models to the physics of commensurability.

Place, publisher, year, edition, pages
Springer, 2016. no 5, 039
Keyword [en]
Gauge-gravity correspondence, Holography and condensed matter physics (AdS/CMT)
National Category
Physical Sciences
URN: urn:nbn:se:kth:diva-188444DOI: 10.1007/JHEP05(2016)039ISI: 000375945300001ScopusID: 2-s2.0-84966335567OAI: diva2:937310

QC 20160615

Available from: 2016-06-15 Created: 2016-06-10 Last updated: 2016-06-15Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full textScopus

Search in DiVA

By author/editor
Krikun, Alexander
By organisation
Nordic Institute for Theoretical Physics NORDITA
In the same journal
Journal of High Energy Physics (JHEP)
Physical Sciences

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 6 hits
ReferencesLink to record
Permanent link

Direct link