Finite-size spectrum of the staggered six-vertex model with antidiagonal boundary conditions

verfasst von

Holger Frahm, Sascha Gehrmann

Abstract

The finite-size spectrum of the critical staggered six-vertex model with antidiagonal boundary conditions is studied. Similar to the case of periodic boundary conditions, we identify three different phases. In two of those, the underlying conformal field theory can be identified to be related to the twisted \(U(1)\) Kac-Moody algebra. In contrast, the finite size scaling in the third regime, whose critical behaviour with the (quasi-)periodic BCs is related to the 2d black hole CFTs possessing a non-compact degree of freedom, is more subtle. Here with antidiagonal BCs imposed, the corrections to the scaling of the ground state grow logarithmically with the system size, while the energy gaps appear to close logarithmically. Moreover, we obtain an explicit formula for the Q-operator which is useful for numerical implementation.

Organisationseinheit(en)

Institut für Theoretische Physik

Typ

Artikel

Journal

Nuclear Physics B

Band

1006

Anzahl der Seiten

13

ISSN

0550-3213

Publikationsdatum

09.2024

Publikationsstatus

Veröffentlicht

Peer-reviewed

Ja

ASJC Scopus Sachgebiete

Kern- und Hochenergiephysik

Elektronische Version(en)

https://arxiv.org/abs/2405.20919 (Zugang: Offen)
https://doi.org/10.1016/j.nuclphysb.2024.116655 (Zugang: Offen)