2010

Kernel function and quantum algebras

Feigin, B., Hoshino, A., Shibahara, J. et al.

Understand

We introduce an analogue $K_n(x,z;q,t)$ of the Cauchy-type kernel function for the Macdonald polynomials, being constructed in the tensor product of the ring of symmetric functions and the commutative algebra $\mathcal{A}$ over the degenerate $\mathbb{C} \mathbb{P}^1$.

  • We show that a certain restriction of $K_n(x,z;q,t)$ with respect to the variable $z$ is neatly described by the tableau sum formula of Macdonald polynomials.
  • Next, we demonstrate that the integer level representation of the Ding-Iohara quantum algebra naturally produces the currents of the deformed $\mathcal{W}$ algebra.
  • Then we remark that the $K_n(x,z;q,t)$ emerges in the highest-to-highest correlation function of the deformed $\mathcal{W}$ algebra.

Built on

  • I.G. Macdonald, Symmetric functions and Hall polynomials

    1995

    Earlier work this paper cites.

  • H. Awata, H. Kubo, S. Odake, J. Shiraishi, Quantum 𝒲 N {\mathcal{W}}_{N} algebras and Macdonald polynomials , Comm. Math. Phys. 179

    1996

    Earlier work this paper cites.

Similar

  • B. Feigin, E. Frenkel, Quantum 𝒲 \mathcal{W} -algebras and elliptic algebras , Comm. Math. Phys. 178

    1996

    Cited alongside, same era.

  • J. Shiraishi, H. Kubo, H. Awata, S. Odake, A quantum deformation of the Virasoro algebra and the Macdonald symmetric functions , Lett. Math. Phys. 38

    1996

    Cited alongside, same era.

Then

  • J. Ding, K. Iohara, Generalization of Drinfeld quantum affine algebras , Lett. Math. Phys. 41

    1997

    Later among the works it cites.

  • B. Feigin, K. Hashizume, A. Hoshino, J. Shiraishi, S. Yanagida, A commutative algebra on degenerate ℂ ​ ℙ 1 \mathbb{C}\mathbb{P}^{1} and Macdonald polynomials , J. Math. Phys. 50

    2009

    Later among the works it cites.

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