English

Branching Formula for $q$-Toda Function of Type B

Quantum Algebra 2025-10-20 v2 Mathematical Physics Combinatorics math.MP

Abstract

We present a proof of the explicit formula for the asymptotically free eigenfunctions of the BNB_N qq-Toda operator which was conjectured by the first and third authors. This formula can be regarded as a branching formula from the BNB_N qq-Toda eigenfunction restricted to the AN1A_{N-1} qq-Toda eigenfunctions. The proof is given by a contigulation relation of the AN1A_{N-1} Toda eigenfunctions and a recursion relation of the branching coefficients.

Cite

@article{arxiv.2103.04378,
  title  = {Branching Formula for $q$-Toda Function of Type B},
  author = {Ayumu Hoshino and Yusuke Ohkubo and Jun'ichi Shiraishi},
  journal= {arXiv preprint arXiv:2103.04378},
  year   = {2025}
}

Comments

7 pages

R2 v1 2026-06-23T23:51:10.057Z