AMU conjecture for surface groups

Let Σ\Sigma be a closed surface of genus at least 22, let p=2rp=2r be an even integer, and consider the quantum representation

ρp:π1(Σ)n=1r1PAut(Vp(Σ,n)).\rho_p:\pi_1(\Sigma)\longrightarrow \prod_{n=1}^{r-1}\mathrm{PAut}(V_p(\Sigma,n)).

Here Vp(Σ,n)V_p(\Sigma,n) is the vector space assigned by the SU(2)\mathrm{SU}(2) Witten–Reshetikhin–Turaev TQFT to Σ\Sigma equipped with a banded point colored by nn. AMU conjecture. If γπ1(Σ){1}\gamma\in\pi_1(\Sigma)\setminus\{1\} is not a power of a simple element, then ρp(γ)\rho_p(\gamma) has infinite order for all sufficiently large pp. This conjecture predicts that quantum representations detect the non-simple nature of mapping classes represented by surface-group elements; the paper discusses its application through asymptotics of quantum representations, but the supplied text does not establish the conjecture in full.

Sources & referencesView supporting material

Primary source

Julien Marché and Ramanujan Santharoubane, “Asymptotics of quantum representations of surface groups”, arXiv:1607.00664 (2016).

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