Holographic description of an anisotropic Dirac semimetal
Abstract Holographic quantum matter exploits the AdS/CFT correspondence to study systems in condensed matter physics. An example of these systems are strongly correlated semimetals, which feature a rich phase diagram structure. In this work, we present a holographic model for a Dirac semimetal in 2...
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| Format: | Article |
| Language: | English |
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SpringerOpen
2024-09-01
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| Series: | Journal of High Energy Physics |
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| Online Access: | https://doi.org/10.1007/JHEP09(2024)080 |
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| author | Sebastián Bahamondes Ignacio Salazar Landea Rodrigo Soto-Garrido |
| author_facet | Sebastián Bahamondes Ignacio Salazar Landea Rodrigo Soto-Garrido |
| author_sort | Sebastián Bahamondes |
| collection | DOAJ |
| description | Abstract Holographic quantum matter exploits the AdS/CFT correspondence to study systems in condensed matter physics. An example of these systems are strongly correlated semimetals, which feature a rich phase diagram structure. In this work, we present a holographic model for a Dirac semimetal in 2 + 1 dimensions that features a topological phase transition. Our construction relies on deforming a relativistic UV fixed point with some relevant operators that explicitly break rotations and some internal symmetries. The phase diagram for different values of the relevant coupling constants is obtained. The different phases are characterized by distinct dispersion relations for probe fermionic modes in the AdS geometry. We find semi-metallic phases characterized by the presence of Dirac cones and an insulating phase featuring a mass gap with a mild anisotropy. Remarkably, we find as well an anisotropic semi-Dirac phase characterized by a massless a fermionic excitation dispersing linearly in one direction while quadratically in the other. |
| format | Article |
| id | doaj-art-c77ff62b3d0e4812a953c4b16a302ae7 |
| institution | OA Journals |
| issn | 1029-8479 |
| language | English |
| publishDate | 2024-09-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of High Energy Physics |
| spelling | doaj-art-c77ff62b3d0e4812a953c4b16a302ae72025-08-20T02:30:58ZengSpringerOpenJournal of High Energy Physics1029-84792024-09-012024911910.1007/JHEP09(2024)080Holographic description of an anisotropic Dirac semimetalSebastián Bahamondes0Ignacio Salazar Landea1Rodrigo Soto-Garrido2Facultad de Física, Pontificia Universidad Católica de ChileInstituto de Física de La Plata — CONICETFacultad de Física, Pontificia Universidad Católica de ChileAbstract Holographic quantum matter exploits the AdS/CFT correspondence to study systems in condensed matter physics. An example of these systems are strongly correlated semimetals, which feature a rich phase diagram structure. In this work, we present a holographic model for a Dirac semimetal in 2 + 1 dimensions that features a topological phase transition. Our construction relies on deforming a relativistic UV fixed point with some relevant operators that explicitly break rotations and some internal symmetries. The phase diagram for different values of the relevant coupling constants is obtained. The different phases are characterized by distinct dispersion relations for probe fermionic modes in the AdS geometry. We find semi-metallic phases characterized by the presence of Dirac cones and an insulating phase featuring a mass gap with a mild anisotropy. Remarkably, we find as well an anisotropic semi-Dirac phase characterized by a massless a fermionic excitation dispersing linearly in one direction while quadratically in the other.https://doi.org/10.1007/JHEP09(2024)080Holography and Condensed Matter Physics (AdS/CMT)AdS-CFT Correspondence |
| spellingShingle | Sebastián Bahamondes Ignacio Salazar Landea Rodrigo Soto-Garrido Holographic description of an anisotropic Dirac semimetal Journal of High Energy Physics Holography and Condensed Matter Physics (AdS/CMT) AdS-CFT Correspondence |
| title | Holographic description of an anisotropic Dirac semimetal |
| title_full | Holographic description of an anisotropic Dirac semimetal |
| title_fullStr | Holographic description of an anisotropic Dirac semimetal |
| title_full_unstemmed | Holographic description of an anisotropic Dirac semimetal |
| title_short | Holographic description of an anisotropic Dirac semimetal |
| title_sort | holographic description of an anisotropic dirac semimetal |
| topic | Holography and Condensed Matter Physics (AdS/CMT) AdS-CFT Correspondence |
| url | https://doi.org/10.1007/JHEP09(2024)080 |
| work_keys_str_mv | AT sebastianbahamondes holographicdescriptionofananisotropicdiracsemimetal AT ignaciosalazarlandea holographicdescriptionofananisotropicdiracsemimetal AT rodrigosotogarrido holographicdescriptionofananisotropicdiracsemimetal |