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Pedagogical introduction to the Sachdev—Ye—Kitaev model and two-dimensional dilaton gravity

 a, b
a Moscow Institute of Physics and Technology (National Research University), Institutskii per. 9, Dolgoprudny, Moscow Region, 141701, Russian Federation
b National Research Center "Kurchatov Institute", Alikhanov Institute of Theoretical and Experimental Physics, ul. B. Cheremushkinskaya 25, Moscow, 117218, Russian Federation

The Sachdev—Ye—Kitaev model and two-dimensional dilaton gravity have recently been attracting increasing attention of the high-energy and condensed-matter physics communities. The success of these models is due to their remarkable properties. Following the original papers, we broadly discuss the properties of these models, including the diagram technique in the limit of a large number of degrees of freedom, the emergence of conformal symmetry in the infrared limit, effective action, four-point functions, and chaos. We also briefly discuss some recent results in this field. On the one hand, we attempt to be maximally rigorous, which means considering all the details and gaps in the argument; on the other hand, we believe that this review can be suitable for those who are not familiar with the relevant models.

Fulltext pdf (919 KB)
Fulltext is also available at DOI: 10.3367/UFNe.2020.06.038805
Keywords: Sachdev—Ye—Kitaev model, two-dimensional gravity, quantum chaos, 1/N expansion, AdS/CFT correspondence
PACS: 03.70.+k, 04.62.+v, 04.70.Dy, 05.30.Fk, 05.45.Ac, 05.45.Mt, 11.10.Kk, 11.10.Wx (all)
DOI: 10.3367/UFNe.2020.06.038805
URL: https://ufn.ru/en/articles/2021/3/a/
000656123500001
2-s2.0-85108009429
2021PhyU...64..219T
Citation: Trunin D A "Pedagogical introduction to the Sachdev—Ye—Kitaev model and two-dimensional dilaton gravity" Phys. Usp. 64 219–252 (2021)
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Received: 3rd, March 2020, revised: 28th, June 2020, 29th, June 2020

Оригинал: Трунин Д А «Педагогическое введение в модель Сачдева—Йе—Китаева и двумерную дилатонную гравитацию» УФН 191 225–261 (2021); DOI: 10.3367/UFNr.2020.06.038805

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