Near conformal perturbation theory in SYK type models
Near conformal perturbation theory in SYK type models
复制标题
SYK型模型中的近共形微扰理论
DOI:
10.1007/jhep12(2020)171
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发表时间:
2020
影响因子:
5.4
通讯作者:
Suzuki, Kenta
中科院分区:
文献类型:
--
作者:
Das, Sumit R.;Ghosh, Animik;Jevicki, Antal;Suzuki, Kenta
We present a systematic procedure to extract the dynamics of the low energy soft mode in SYK type models with a single energy scale J and emergent reparametrization symmetry in the IR. This is given in the framework of the perturbative scheme of arXiv: 1608.07567 based on a specific (off-shell) breaking of conformal invariance in the UV, adjusted to yield the exact large-N saddle point. While this breaking term formally vanishes on-shell, it has a non-trivial effect on correlation functions and the effective action. In particular, it leads to the Schwarzian action with a specific coupling to bi-local matter. The method is applied to the evaluation of O (1) corrections to the correlation function of bi-locals. As a byproduct we confirm precise agreement with the explicit, symmetry breaking procedure. We provide a verification in the large q limit (Liouville theory), where the correlators can be calculated exactly at all length scales. In this case, our scheme illuminates how the enhanced O (J) and the subleading O (1) contributions originate from the Schwarzian dynamics of the soft mode and its interaction with h= 2 (bi-local) matter.
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DOI:
--
发表时间:
2019
期刊:
The European Physical Journal C
影响因子:
--
作者:
M. Cardella
通讯作者:
M. Cardella
影响因子:
5.4
作者:
I. Klebanov;A. Milekhin;G. Tarnopolsky;Wenli Zhao
通讯作者:
I. Klebanov;A. Milekhin;G. Tarnopolsky;Wenli Zhao
影响因子:
5.4
作者:
Sumit R. Das;A. Jevicki;Kenta Suzuki
通讯作者:
Sumit R. Das;A. Jevicki;Kenta Suzuki
影响因子:
5.4
作者:
Changha Choi;M. Mezei;G'abor S'arosi
通讯作者:
G'abor S'arosi
影响因子:
5
作者:
G. Tarnopolsky
通讯作者:
G. Tarnopolsky