English

A combinatorial realization of Kirillov-Reshetikhin crystals for type E arising from translations

Quantum Algebra 2025-03-04 v4 Combinatorics

Abstract

The main purpose of this paper is to give a combinatorial realization of Kirillov-Reshetikhin (KR simply) crystals Br,sB^{r, s} for type En(1)\text{E}_n^{(1)} with a minuscule node rr and s1s \ge 1. To do this, we describe explicitly the crystal of the quantum nilpotent subalgebra associated with the translation by the negative of the rr-th fundamental weight. Then the crystal can be extended as an affine crystal, in which a certain subcrystal characterized by the εr\varepsilon_r^*-statistic is isomorphic to Br,sB^{r,s} as an affine crystal, where εr\varepsilon_r^* is also realized precisely in terms of triple and quadruple paths.

Keywords

Cite

@article{arxiv.2103.11510,
  title  = {A combinatorial realization of Kirillov-Reshetikhin crystals for type E arising from translations},
  author = {Il-Seung Jang},
  journal= {arXiv preprint arXiv:2103.11510},
  year   = {2025}
}

Comments

35 pages, Abstract and Introduction are revised, rearranged Sections, revised several sentences, added several references, added Remark 5.4, added comment in Remark 6.5, typos corrected, minor corrections, v4; minor corrections, to appear in Journal of Algebra