Comments on the random Thirring model

Micha Berkooz, Prithvi Narayan, Moshe Rozali, Joan Simon Soler

Research output: Contribution to journalArticlepeer-review

Abstract

The Thirring model with random couplings is a translationally invariant generalisation of the SYK model to 1+1 dimensions, which is tractable in the large N limit. We compute its two point function, at large distances, for any strength of the random coupling. For a given realisation, the couplings contain both irrelevant and relevant marginal operators, but statistically, in the large N limit, the random couplings are overall always marginally irrelevant, in sharp distinction to the usual Thirring model. We show the leading term to the β function in conformal perturbation theory, which is quadratic in the couplings, vanishes, while its usually subleading cubic term matches our RG flow.
Original languageEnglish
Article number57
Number of pages27
Journal Journal of High Energy Physics
Volume2017
DOIs
Publication statusPublished - 14 Sep 2017

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