Abstract

We study the chiral limit of 2d QCD with a single quark flavor at finite Nc 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

Title
Chiral limit of 2d QCD revisited with lightcone conformal truncation
Author
Anand, Nikhil 1   VIAFID ORCID Logo  ; Fitzpatrick, A. Liam 2   VIAFID ORCID Logo  ; Katz, Emanuel 2 ; Xin, Yuan 3   VIAFID ORCID Logo 

1  McGill University, Department of Physics, QC, Canada (GRID:grid.14709.3b) (ISNI:0000 0004 1936 8649) 
2  Boston University, Department of Physics, Boston, USA (GRID:grid.189504.1) (ISNI:0000 0004 1936 7558) 
3  Yale University, Department of Physics, New Haven, USA (GRID:grid.47100.32) (ISNI:0000 0004 1936 8710) 
Pages
189
Publication year
2024
Publication date
Jan 2024
Publisher
Springer Nature B.V.
e-ISSN
10298479
Source type
Scholarly Journal
Language of publication
English
DOI
https://doi.org/10.1007/JHEP01(2024)189
ProQuest document ID
2921362260
Copyright
© The Author(s) 2024. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.