Gapless and gapped holographic phonons

Thumbnail Image

Files

2020_jhep_amoretti_gaplessandgappedholographicpho.pdf (814.6 KB)
Identifiers
URI: http://hdl.handle.net/10347/21873
E-ISSN: 1029-8479
DOI: 10.1007/JHEP01(2020)058

Publication date

2020

Authors

Advisors

Tutors

Editors

Journal Title

Journal ISSN

Volume Title

Publisher

Springer
Metrics
Google Scholar
lacobus
Export

Research Projects

Organizational Units

Journal Issue

Abstract

We study a holographic model where translations are both spontaneously and explicitly broken, leading to the presence of (pseudo)-phonons in the spectrum. The weak explicit breaking is due to two independent mechanisms: a small source for the condensate itself and additional linearly space-dependent marginal operators. The low energy dynamics of the model is described by Wigner crystal hydrodynamics. In absence of a source for the condensate, the phonons remain gapless, but momentum is relaxed. Turning on a source for the condensate damps and pins the phonons. Finally, we verify that the universal relation between the phonon damping rate, mass and diffusivity reported in [1] continues to hold in this model for weak enough explicit breaking

Description

Keywords

Effective Field Theories| Holography and condensed matter physics (AdS/CMT)| Space-Time Symmetries| Spontaneous Symmetry Breaking

Bibliographic citation

Amoretti, A., Areán, D., Goutéraux, B. et al. Gapless and gapped holographic phonons. J. High Energ. Phys. 2020, 58 (2020). https://doi.org/10.1007/JHEP01(2020)058

Relation

Has part

Has version

Is based on

Is part of

Is referenced by

Is version of

Requires

Sponsors

D.A is supported by the ‘Atracción del Talento’ programme (Comunidad de Madrid) under grant 2017-T1/TIC-5258 and by MCIU/AEI/FEDER, UE, through the grants SEV-2016- 0597, FPA2015-65480-P and PGC2018-095976-B-C21. B.G. is supported by the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme (grant agreement No 758759). The work of DM has been funded by the Spanish grants FPA2014-52218-P and FPA2017-84436-P by Xunta de Galicia (GRC2013-024), by FEDER and by the María de Maeztu Unit of Excellence MDM-2016-0692

Rights

© The Author(s) 2020. Open Access. 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

Collections

Física de Partículas
Instituto Galego de Física de Altas Enerxías (IGFAE)