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arXiv · 2002.04952

Notes on index of quantum integrability

Jia Tian·Jue Hou·Bin Chen
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Abstract

A quantum integrability index was proposed in \cite{KMS}. It systematizes the Goldschmidt and Witten's operator counting argument \cite{GW} by using the conformal symmetry. In this work we compute the quantum integrability indexes for the symmetric coset models ${SU(N)}/{SO(N)}$ and $SO(2N)/{SO(N)\times SO(N)}$. The indexes of these theories are all non-positive except for the case of ${SO(4)}/{SO(2)\times SO(2)}$. Moreover we extend the analysis to the theories with fermions and consider a concrete theory: the $\mathbb{CP}^N$ model coupled with a massless Dirac fermion. We find that the indexes for this class of models are non-positive as well.

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Jia Tian, Jue Hou, Bin Chen. 2020-02-12. Notes on index of quantum integrability. https://doi.org/10.1088/1572-9494%2Fabe9aa

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