Abstract
We generalize our analysis in [arXiv:1301.1977], and show that a 5d and 6d AGT correspondence for SU(N) — which essentially relates the relevant 5d and 6d Nekrasov instanton partition functions to the integrable representations of a q-deformed and elliptic affine \( {{\mathcal{W}}_N} \) -algebra — can be derived, purely physically, from the principle that the spacetime BPS spectra of string-dual M-theory compactifications ought to be equivalent. Via an appropriate defect, we also derive a “fully-ramified” version of the 5d and 6d AGT correspondence where integrable representations of a quantum and elliptic affine SU(N)-algebra at the critical level appear on the 2d side, and argue that the relevant “fully-ramified” 5d and 6d Nekrasov instanton partition functions are simultaneous eigenfunctions of commuting operators which define relativistic and elliptized integrable systems. As an offshoot, we also obtain various mathematically novel and interesting relations involving the double loop algebra of SU(N), elliptic Macdonald operators, equivariant elliptic genus of instanton moduli space, and more.
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ArXiv ePrint: 1309.4775
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Tan, MC. An M-theoretic derivation of a 5d and 6d AGT correspondence, and relativistic and elliptized integrable systems. J. High Energ. Phys. 2013, 31 (2013). https://doi.org/10.1007/JHEP12(2013)031
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DOI: https://doi.org/10.1007/JHEP12(2013)031