Bonahon–Wong–Yang volume conjecture for quantum invariants of surface diffeomorphisms

Let φ:ΣΣ\varphi:\Sigma\to\Sigma be a pseudo-Anosov diffeomorphism, let MφM_\varphi be its mapping torus, and let rr be a generic φ\varphi-invariant character in the smooth part of the SL(2;C)\mathrm{SL}(2;\mathbb C)-character variety of Σ\Sigma. For φ\varphi-invariant puncture weights, let Λφ,r,pvq:VV\Lambda^q_{\varphi,r,p_v}:V\to V be the associated intertwiner. Bonahon–Wong–Yang volume conjecture. For the sequence of puncture weights pv=ehv/n+ehv/np_v=e^{h_v/n}+e^{-h_v/n},

limn  odd4πnlnTrace(Λφ,r,pvq)=Vol(Mφ),\lim_{\substack{n\to\infty\ \text{ odd}}}\frac{4\pi}{n}\ln\left|\mathrm{Trace}(\Lambda^q_{\varphi,r,p_v})\right|=\mathrm{Vol}(M_\varphi),

where Vol(Mφ)\mathrm{Vol}(M_\varphi) is the hyperbolic volume of the mapping torus with its complete hyperbolic structure. This conjecture predicts that the asymptotics of these quantum invariants recover the complete hyperbolic volume; it is proved for the figure-eight-knot complement and, under additional volume assumptions, for some other surface bundles.

Sources & referencesView supporting material

Primary source

Tushar Pandey and Ka Ho Wong, “Generalized Bonahon-Wong-Yang volume conjecture of quantum invariants of surface diffeomorphisms I: the figure eight knot complement”, arXiv:2402.04483 (2024).

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