Modular differential equations of W(Dn)-invariant Jacobi forms. / Adler, D.; Gritsenko, V.
In: Journal of Geometry and Physics, Vol. 206, 01.12.2024.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Modular differential equations of W(Dn)-invariant Jacobi forms
AU - Adler, D.
AU - Gritsenko, V.
N1 - Export Date: 19 October 2024 CODEN: JGPHE Адрес для корреспонденции: Adler, D.; Saint Petersburg University, 7/9 Universitetskaya nab., Russian Federation; эл. почта: dmitry.v.adler@gmail.com
PY - 2024/12/1
Y1 - 2024/12/1
N2 - We study rings of weak Jacobi forms invariant with respect to the action of the Weyl group for the root systems Cn and Dn, and provide an explicit construction of generators of such rings by using modular differential operators. The construction of generators in the form of a Dn-tower (n≥2) gives a simple proof that these graded rings of Jacobi forms are polynomial. We study in detail modular differential equations (MDEs), which are satisfied by generators of index 1. Interesting anomalies are noticed for the lattices D4, D8 and D12. In particular, some generators for these lattices satisfy the Kaneko–Zagier type MDEs of order 2 or MDEs of order 1 similar to the differential equation of the elliptic genus of three-dimensional Calabi–Yau manifolds. © 2024
AB - We study rings of weak Jacobi forms invariant with respect to the action of the Weyl group for the root systems Cn and Dn, and provide an explicit construction of generators of such rings by using modular differential operators. The construction of generators in the form of a Dn-tower (n≥2) gives a simple proof that these graded rings of Jacobi forms are polynomial. We study in detail modular differential equations (MDEs), which are satisfied by generators of index 1. Interesting anomalies are noticed for the lattices D4, D8 and D12. In particular, some generators for these lattices satisfy the Kaneko–Zagier type MDEs of order 2 or MDEs of order 1 similar to the differential equation of the elliptic genus of three-dimensional Calabi–Yau manifolds. © 2024
KW - Elliptic genera
KW - Invariant theory
KW - Jacobi forms
KW - Modular differential equations
U2 - 10.1016/j.geomphys.2024.105339
DO - 10.1016/j.geomphys.2024.105339
M3 - статья
VL - 206
JO - Journal of Geometry and Physics
JF - Journal of Geometry and Physics
SN - 0393-0440
ER -
ID: 126165378