English

A new Young wall realization of $B(\lambda)$ and $B(\infty)$

Quantum Algebra 2024-03-19 v1 Combinatorics Representation Theory

Abstract

Using new combinatorics of Young walls, we give a new construction of the arbitrary level highest weight crystal B(λ)B(\lambda) for the quantum affine algebras of types A2n(2)A^{(2)}_{2n}, Dn+1(2)D^{(2)}_{n+1}, A2n1(2)A^{(2)}_{2n-1}, Dn(1)D^{(1)}_n, Bn(1)B^{(1)}_n and Cn(1)C^{(1)}_n. We show that the crystal consisting of reduced Young walls is isomorphic to the crystal B(λ)B(\lambda). Moreover, we provide a new realization of the crystal B()B(\infty) in terms of reduced virtual Young walls and reduced extended Young walls.

Keywords

Cite

@article{arxiv.2403.11055,
  title  = {A new Young wall realization of $B(\lambda)$ and $B(\infty)$},
  author = {Zhaobing Fan and Shaolong Han and Seok-Jin Kang and Young Rock Kim},
  journal= {arXiv preprint arXiv:2403.11055},
  year   = {2024}
}
R2 v1 2026-06-28T15:22:59.763Z