{ "id": "2111.11663", "version": "v2", "published": "2021-11-23T06:00:39.000Z", "updated": "2022-06-28T02:18:05.000Z", "title": "Asymptotic behaviours of q-orthogonal polynomials from a q-Riemann Hilbert Problem", "authors": [ "Nalini Joshi", "Tomas Lasic Latimer" ], "comment": "23 pages, 1 figure", "categories": [ "math.CA", "math-ph", "math.MP" ], "abstract": "We describe a Riemann-Hilbert problem for a family of $q$-orthogonal polynomials, $\\{ P_n(x) \\}_{n=0}^\\infty$, and use it to deduce their asymptotic behaviours in the limit as the degree, $n$, approaches infinity. We find that the $q$-orthogonal polynomials studied in this paper share certain universal behaviours in the limit $n\\to\\infty$. In particular, we observe that the asymptotic behaviour near the location of their smallest zeros, $x \\sim q^{n/2}$, and norm, $\\|P_n\\|_2$, are independent of the weight function as $n\\to\\infty$.", "revisions": [ { "version": "v2", "updated": "2022-06-28T02:18:05.000Z" } ], "analyses": { "keywords": [ "asymptotic behaviour", "q-riemann hilbert problem", "q-orthogonal polynomials", "approaches infinity", "smallest zeros" ], "note": { "typesetting": "TeX", "pages": 23, "language": "en", "license": "arXiv", "status": "editable" } } }