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Chiral limit of 2d QCD revisited with lightcone conformal truncation

Authors :
Nikhil Anand
A. Liam Fitzpatrick
Emanuel Katz
Yuan Xin
Source :
Journal of High Energy Physics, Vol 2024, Iss 1, Pp 1-27 (2024)
Publication Year :
2024
Publisher :
SpringerOpen, 2024.

Abstract

Abstract We study the chiral limit of 2d QCD with a single quark flavor at finite N c using LCT. By modifying the LCT basis according to the quark mass in a manner motivated by ’t Hooft’s analysis, we are able to restore convergence for quark masses much smaller than the QCD strong coupling scale. For such small quark masses, the IR of the theory is expected to be well described by the Sine-Gordon model. We verify that LCT numerics are able to capture in detail the spectrum and correlation functions of the Sine-Gordon model. This opens up the possibility for studying deformations of various integrable CFTs using LCT by considering the chiral limit of QCD like theories.

Details

Language :
English
ISSN :
10298479
Volume :
2024
Issue :
1
Database :
Directory of Open Access Journals
Journal :
Journal of High Energy Physics
Publication Type :
Academic Journal
Accession number :
edsdoj.b1c42c1bdad4fabb37789c559b5a64e
Document Type :
article
Full Text :
https://doi.org/10.1007/JHEP01(2024)189