Harmonic locus and Calogero-Moser spaces

التفاصيل البيبلوغرافية
العنوان: Harmonic locus and Calogero-Moser spaces
المؤلفون: Felder, Giovanni, Veselov, Alexander P.
سنة النشر: 2024
المجموعة: Mathematics
Mathematical Physics
مصطلحات موضوعية: Mathematical Physics, Mathematics - Classical Analysis and ODEs, 34M35, 37J35, 81R12
الوصف: We study the harmonic locus consisting of the monodromy-free Schr\"odinger operators with rational potential and quadratic growth at infinity. It is known after Oblomkov that it can be identified with the set of all partitions via the Wronskian map for Hermite polynomials. We show that the harmonic locus can also be identified with the subset of the Calogero--Moser space introduced by Wilson, which is fixed by the symplectic action of $\mathbb C^\times.$ As a corollary, for the multiplicity-free part of the locus we effectively solve the inverse problem for the Wronskian map by describing the partition in terms of the spectrum of the corresponding Moser matrix. We also compute the characters of the $\mathbb C^\times$-action at the fixed points, proving, in particular, a conjecture of Conti and Masoero.
Comment: 16 pages, 2 figures
نوع الوثيقة: Working Paper
URL الوصول: http://arxiv.org/abs/2404.18471
رقم الأكسشن: edsarx.2404.18471
قاعدة البيانات: arXiv