Abstract
There is substantial evidence that the ground state of the 2D chiral Gross-Neveu model, in the presence of a fermion number chemical potential and in the large limit, is given by a “chiral spiral” phase, namely an inhomogeneous phase with a chiral condensate having a spatially periodic phase. We show that the chiral spiral configuration persists at finite and for any . Our analysis is based on nonabelian bosonization, that relates the model to a Wess-Zumino-Witten model deformed by current-current interactions. In this description, the appearance of the inhomogeneous phase is surprisingly simple. We also rederive the phase diagram of the large chiral Gross-Neveu model via a direct diagrammatic computation, finding agreement with previous results in the literature.
- Received 26 March 2022
- Accepted 20 July 2022
DOI:https://doi.org/10.1103/PhysRevLett.129.071603
Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.
Published by the American Physical Society