Line operators in 4d Chern-Simons theory and Cherkis bows
Nafiz Ishtiaque, Yehao Zhou
SciPost Phys. 16, 052 (2024) · published 22 February 2024
- doi: 10.21468/SciPostPhys.16.2.052
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Abstract
We show that the phase spaces of a large family of line operators in 4d Chern-Simons theory with GL$_n$ gauge group are given by Cherkis bow varieties with $n$ crosses. These line operators are characterized by Hanany-Witten type brane constructions involving D3, D5, and NS5 branes in an $\Omega$-background. Linking numbers of the five-branes and mass parameters for the D3 brane theories determine the phase spaces and in special cases they correspond to vacuum moduli spaces of 3d $\mathcal{N}=4$ quiver theories. Examples include line operators that conjecturally create T, Q, and L-operators in integrable spin chains.
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