Abstract:For primes $p\ge 7$, we give a parametrization of the filtered $\varphi$-modules attached to the $p$-adic Tate modules of abelian surfaces over $\mathbb{Q}_p$ with supersingular good reduction. We use this classification to determine the neutral components of the monodromy groups of the associated $p$-adic representations up to $\bar{\mathbb{Q}}_p$-isomorphism. Furthermore, we analyze the $p$-adic distribution of these groups in the moduli space of filtered $\varphi$-modules. In particular, we prove that the neutral components are generically isomorphic to $\mathbf{GL}_2 \times_{\det} \mathbf{GL}_2$.
From: Moqing Chen [view email]
[v1]
Thu, 27 Nov 2025 23:51:46 UTC (40 KB)
[v2]
Wed, 24 Jun 2026 19:59:11 UTC (44 KB)
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