The Grassmannian-like Coset Model and the Higher Spin Currents

Abstract

In the Grassmannian-like coset model, $\frac{SU(N+M{)}_k}{SU(N{)}_k\times U(1{)}_{kNM(N+M)}}$, Creutzig and Hikida have found the charged spin-$2,3$ currents and the neutral spin-$2,3$ currents previously. In this paper, as an extension of Gaberdiel-Gopakumar conjecture found ten years ago, we calculate the operator product expansion (OPE) between the charged spin-$2$ current and itself, the OPE between the charged spin-$2$ current and the charged spin-$3$ current and the OPE between the neutral spin-$3$ current and itself for generic $N,M$ and $k$. From the second OPE, we obtain the new charged quasi primary spin-$4$ current while from the last one, the new neutral primary spin-$4$ current is found implicitly. The infinity limit of $k$ in the structure constants of the OPEs is described in the context of asymptotic symmetry of $M\times M$ matrix generalization of $Ad{S}_3$ higher spin theory. Moreover, the OPE between the charged spin-$3$ current and itself is determined for fixed $(N,M)=(5,4)$ with arbitrary $k$ up to the third order pole. We also obtain the OPEs between charged spin-$1,2,3$ currents and neutral spin-$3$ current. From the last OPE, we realize that there exists the presence of the above charged quasi primary spin-$4$ current in the second order pole for fixed $(N,M)=(5,4)$. We comment on the complex free fermion realization.

86 pages;The footnote 2 is added, the section 8 is moved to Appendix H, the section 1 is improved, the redundant explanations are removed and to appear in JHEP

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Cited by in corpus (3)

• Toward A Supersymmetric $w_{1+\infty }$ Symmetry in the Celestial Conformal Field Theory
• Adding Complex Fermions to the Grassmannian-like Coset Model
• Fermionic Construction in the Supersymmetric Coset Model