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We study the sector of large charge operators $\phi^n$ ($\phi$ being the complexified scalar field) in the $O(2)$ Wilson-Fisher fixed point in $4-\epsilon$ dimensions that emerges when the coupling takes the critical value $g\sim \epsilon$.
1902
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D. Orlando, S. Reffert and F. Sannino, “A safe CFT at large charge,” arXiv:1905.00026 [hep-th]
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S. Rychkov and Z. M. Tan, “The ϵ \epsilon -expansion from conformal field theory,” J. Phys. A 48
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2018
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A. De La Fuente, “The large charge expansion at large N N ,” JHEP 1808
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2017
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2017
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O. Loukas, D. Orlando and S. Reffert, “Matrix models at large charge,” JHEP 1710
2017
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2017
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2017
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2018
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2019
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2019
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