RT Journal Article
T1 Gapless and gapped holographic phonons
A1 Amoretti, Andrea
A1 Areán Fraga, Daniel
A1 Goutéraux, Blaise
A1 Musso, Daniele
K1 Effective Field Theories
K1 Holography and condensed matter physics (AdS/CMT)
K1 Space-Time Symmetries
K1 Spontaneous Symmetry Breaking
AB We study a holographic model where translations are both spontaneously andexplicitly broken, leading to the presence of (pseudo)-phonons in the spectrum. The weakexplicit breaking is due to two independent mechanisms: a small source for the condensateitself and additional linearly space-dependent marginal operators. The low energy dynamicsof the model is described by Wigner crystal hydrodynamics. In absence of a source for thecondensate, the phonons remain gapless, but momentum is relaxed. Turning on a source forthe condensate damps and pins the phonons. Finally, we verify that the universal relationbetween the phonon damping rate, mass and diffusivity reported in [1] continues to holdin this model for weak enough explicit breaking
PB Springer
YR 2020
FD 2020
LK http://hdl.handle.net/10347/21873
UL http://hdl.handle.net/10347/21873
LA eng
NO 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
NO D.A is supported by the ‘Atracción del Talento’ programme (Comunidad de Madrid) undergrant 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 EuropeanResearch Council (ERC) under the European Union’s Horizon 2020 research and innovationprogramme (grant agreement No 758759). The work of DM has been funded by the Spanishgrants FPA2014-52218-P and FPA2017-84436-P by Xunta de Galicia (GRC2013-024), byFEDER and by the María de Maeztu Unit of Excellence MDM-2016-0692
DS Minerva
RD 29 abr 2026