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arXiv 0908.1690math.GT
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三维SL(2,C)-Reidemeister挠率的合理性

Rationality of the SL(2,C)-Reidemeister torsion in dimension 3

Jerome Dubois, Stavros Garoufalidis

摘要:

若$M$是一个有限体积的具有一个尖点且无2-挠的完备双曲3-流形,则它的$\SL(2,\BC)$ -特征簇的几何分支$X_M$是一条仿射复曲线,它在离散忠实表示$ρ_0$上是光滑的. Porti在$X_M$中的$ρ_0$的一个邻域中定义了一个非交换的Reidemeister挠,并观察到它是一个解析映射,它是$X_M$上唯一有理函数的芽.本文证明了:(a)表示的挠率至多存在于表示的不变迹域的二次扩张中;(b)表示的挠率与经线或经线的迹之间存在多项式关系。我们假设$M$的参数化体积猜想的$1/N^k$ -渐近性的系数是$X_M$上有理函数域的元素。

英文摘要:

If $M$ is a finite volume complete hyperbolic 3-manifold with one cusp and no 2-torsion, the geometric component $X_M$ of its $\SL(2,\BC)$-character variety is an affine complex curve, which is smooth at the discrete faithful representation $ρ_0$. Porti defined a non-abelian Reidemeister torsion in a neighborhood of $ρ_0$ in $X_M$ and observed that it is an analytic map, which is the germ of a unique rational function on $X_M$. In the present paper we prove that (a) the torsion of a representation lies in at most quadratic extension of the invariant trace field of the representation, and (b) the existence of a polynomial relation of the torsion of a representation and the trace of the meridian or the longitude. We postulate that the coefficients of the $1/N^k$-asymptotics of the Parametrized Volume Conjecture for $M$ are elements of the field of rational functions on $X_M$.

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