Bosonization and correlators of the one-dimensional Hubbard model
Abstract
We present a simple derivation of the Luttinger liquid relation for the one-dimensional Hubbard model, considering a finite U and in the [ image ] limit. We describe a simple solution of the Hubbard model in the infinite repulsion limit and use it to calculate the correlators of the model in this limit in a simple and physical way using the bosonization technique. We then calculate the asymptotics of the correlators of the model at arbitrary U through a single parameter, which can be calculated from the Bethe Ansatz solution. Our derivation of the critical exponents is simple and allows one to express different physical operators of the Hubbard model through the charge and spin Bose fields in a direct and physically transparent way.
- Publication:
-
Journal of Statistical Mechanics: Theory and Experiment
- Pub Date:
- October 2024
- DOI:
- 10.1088/1742-5468/ad83c6
- arXiv:
- arXiv:2410.22610
- Bibcode:
- 2024JSMTE2024j3102O
- Keywords:
-
- Bosonization;
- correlation functions;
- Hubbard and related model;
- integrable spin chains and vertex models;
- Condensed Matter - Strongly Correlated Electrons;
- High Energy Physics - Theory;
- Mathematical Physics
- E-Print:
- 11 pages