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This article is cited in 11 scientific papers (total in 11 papers)
Notes on the SYK model in real time
I. Ya. Aref'eva, I. V. Volovich Steklov Mathematical Institute of Russian Academy of Sciences, Moscow, Russia
Abstract:
We discuss a nonperturbative formulation of the Sachdev–Ye–Kitaev (SYK) model. The partition function of the model can be represented as a well-defined functional integral over Grassmann variables in Euclidean time, but it diverges after the transformation to fermion bilocal fields. We note that the generating functional of the SYK model in real time is well defined even after the transformation to bilocal fields and can be used for nonperturbative investigations of its properties. We study the SYK model in zero dimensions, evaluate its large-$N$ expansion, and investigate phase transitions.
Keywords:
disorder model, $1/N$ expansion, Sachdev–Ye–Kitaev model.
Received: 17.01.2018
Citation:
I. Ya. Aref'eva, I. V. Volovich, “Notes on the SYK model in real time”, TMF, 197:2 (2018), 296–310; Theoret. and Math. Phys., 197:2 (2018), 1650–1662
Linking options:
https://www.mathnet.ru/eng/tmf9533https://doi.org/10.4213/tmf9533 https://www.mathnet.ru/eng/tmf/v197/i2/p296
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Abstract page: | 612 | Full-text PDF : | 126 | References: | 59 | First page: | 33 |
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