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Bibliographic Details
Main Authors: Biswas, Indranil, Sengupta, Ambar N.
Format: Preprint
Published: 2026
Subjects:
Online Access:https://arxiv.org/abs/2604.27081
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Table of Contents:
  • Take a compact Sasakian threefold $M$ and consider the associated irreducible $\text{SL}(r,{\mathbb C})$-character variety ${\mathcal R} := \text{Hom}(π_1(M, x_0), \text{SL}(r, {\mathbb C}))^{ir}/ \text{SL}(r, {\mathbb C})$ of $M$, where $\text{Hom}(π_1(M, x_0), \text{SL}(r, {\mathbb C}))^{ir}$ is the space of irreducible homomorphisms. We first construct a natural algebraic $2$-form on $\mathcal R$. Then it is shown that this $2$--form is closed. Finally we show that the restriction of this $2$--form to $\text{Hom}(π_1(M, x_0), \text{SU}(r))^{ir}$ is symplectic.